Ask MIT Climate
Get smart quickly on climate change with this award-winning MIT podcast. It breaks down the science, technologies, and policies behind climate change, how it impacts us, and what society can do about it. Each quick episode presents the what, why, and how of climate change from real scientists, helping listeners make informed decisions for the future.
Episodes
Dry spells and downpours
How can climate change cause both more intense droughts and more severe floods? With help from Prof. Mathew Barlow, we dive into the water cycle on a warming planet, and learn how the basic physics of water moving through the atmosphere can explain a lot of the strange weather we need to prepare for as the world heats up.
For a deeper dive and additional resources related to this episode, visit: h
To the ice sheets with a polar scientist
In our previous episode, we spoke with Dr. Sarah Das, a Scientist Emeritus at Woods Hole Oceanographic Institution, about how climate change is affecting the big polar ice sheets of Antarctica and Greenland. She’s been traveling to the poles for her research since the nineties, and this week, she’s taking us behind the scenes: into the world of glacier science, “boomerang flights,” and ice as far
Polar ice in a warming world
The frozen parts of our planet—from sprawling polar ice sheets and floating sea ice to mountain glaciers and frigid soils—face profound risks from climate change. Already, a warmer world has transformed these landscapes, with consequences that span the globe. Dr. Sarah Das, a Scientist Emeritus at Woods Hole Oceanographic Institution, joins to discuss her decades-long career studying the Antarctic
A hard look at steel
From cars and ships to bridges and skyscrapers, steel forms the landscape of modern life. At the same time, steelmaking is one of the world’s biggest industrial sources of climate-warming carbon dioxide. Antoine Allanore, a professor of metallurgy at MIT, explains how CO2 became so entrenched in the chemistry of steelmaking—and the creative ways scientists and engineers are trying to get it out.
W
An economist’s guide to climate change
Solutions to climate change, like building clean energy, come with a price tag. But unchecked warming also brings serious costs. As we make investments to rein in our climate pollution, how should we weigh costs and benefits? Dr. Jennifer Morris of MIT joins the show to explain how economists have tried to pin down the dollar costs of a warming planet, and why a clear answer has proved elusive. To
Re-air and update: Carbon pricing
What exactly is a carbon price, and how does it work? To prepare for a new episode about climate economics, we’re re-airing this season one episode in which MIT professor Christopher Knittel explains economists’ favorite tool for addressing climate change. Professor Knittel also returns for a special update on big developments in the world of carbon pricing, from Canada, China, and the European Un
The (micro)grid of the future
Solar panels, batteries, microgrids, and other emerging energy technologies are making it easier than ever before for a community to produce some or all of its own power. Prof. David Hsu lays out the policies and technologies challenging the traditional, centralized model of the electric grid, including in places that lack reliable access to electricity. As the world strives to make energy cleaner
The reshuffling of life on Earth
Climate change is putting pressure not only on humans, but also on our fellow species. How can plants, animals, and other living things survive as their habitats are transformed? In this episode, we explore one way: moving. Dr. Toni Lyn Morelli and Dr. Alexej Sirén help us understand how climate change is shaking up the map of where species live—and what that means for all of us who share this pla
Taking Earth’s temperature
The past three years have been the three hottest humanity has ever measured. But who does the measuring, and how? Dr. Samantha Burgess, of the European Union’s Copernicus Climate Change Service, joins the show to explain how we know the temperature of the Earth, and how a global community of scientists works together to keep tabs on the health of our planet.
For show notes and more resources, visi
The nuclear price tag
Nuclear power offers huge amounts of round-the-clock energy free of climate-warming pollution. In the United States, it’s also become very expensive to build. As government support grows to bring more nuclear power to the U.S., Prof. Jacopo Buongiorno of MIT joins us to break down how nuclear got so costly and what we can learn from countries with more active nuclear industries.
For a deeper dive
Marshes, mangroves, meadows
Salt marshes humming with insects and birds. Mangrove forests with tangled, arching roots. Seagrass meadows that blanket the ocean floor. The world’s coastal saltwater wetlands provide shelter for wildlife, purify water, and protect seaside infrastructure. And as Dr. Julie Simpson of MIT tells us, they also have a climate superpower: drawing down and locking away extraordinary amounts of planet-wa
New season, new name!
The eighth season of MIT’s climate change podcast starts next week, and we’ve got some news! TILclimate is now Ask MIT Climate. It’s part of an effort to bring all of our climate change resources under one umbrella and reach learners in as many ways as we can.We’re also diving into video! Find us on Instagram, TikTok, and YouTube @askmitclimate for outtakes, bonus content, and more climate knowled
Update: Where we've been and where we're going
We’re dropping into your feed to share the news that our founding host, Laur Hesse Fisher, is departing MIT and TILclimate. In this episode, Laur sits down with new host Madison Goldberg to talk about the philosophies that have shaped TILclimate over seven seasons and take listeners behind the scenes of the show. They also discuss what’s in store for season eight—because TILclimate isn’t going any
Transmission: Power to the people
Power lines may not look as high-tech and inspiring as a wind turbine or a solar field. But as MIT’s Joshua Hodge explains, these lines—and the rest of the sprawling “machine” that is the transmission system—are critical for harnessing clean, cheap, reliable power. In this episode of TILclimate, we explore what we stand to gain from a bigger, better transmission system, and how we might make it ha
Cleaner air
Here at TILclimate, we’re often asked about the health and environmental effects of materials in solar panels and batteries. But what if the greatest costs are the ones we’re already bearing—from the fossil fuels those technologies would replace? In this episode, pulmonologist Dr. Mary Rice explains how air pollution from coal, oil, and gas can make us sick, and why a cleaner energy system benefit
Dealing with dead batteries
The world’s demand for batteries to power electric vehicles is growing at incredible speed. What will we do with all these batteries when they die? Dr. Linda Gaines of Argonne National Laboratory joins TILclimate to explain what batteries are made of, how we obtain those materials, and how we can get them back when the batteries reach the end of their lives—along with other options to make this in
Geothermal: Earth’s infinite clean power
Deep beneath the Earth’s surface, a molten stew of metals radiates vast amounts of energy. Prof. Roland Horne, Director of the Stanford Geothermal Program, joins TILclimate to talk about the “geothermal energy” technologies that tap this underground resource for electricity, manufacturing, and home heating and cooling. He also shares the recent breakthroughs that have begun bringing this always-on
The great indoors
Modern buildings are complex machines, using heating, cooling and a host of other appliances to turn energy into comfort. But that energy comes with a cost: today, our buildings do more to warm the climate than heavy industry, agriculture, or transportation. Prof. Tarek Rakha provides an architect’s view of buildings and the climate, sharing how we can build anew—and upgrade our existing buildings
Did climate change do that?
A new type of climate science is allowing us to draw clearer connections between our warming planet, and the extreme weather events this warming creates. Thanks to “climate change attribution,” scientists can now say confidently when climate change has made a heatwave or hurricane more likely, and by how much. Dr. Andrew Pershing explains how attribution science works, and why this information is
Hasn't the climate changed before?
The Earth has gone through massive climate change before—many times over, in fact!—but human civilization has not. Prof. David McGee, a specialist in the study of ancient climates, joins the show to explain what came before the 10,000 years of global stability in which complex human societies emerged and grew. Along the way, we explore the scientific tools used to study the distant past, the great
Farm to table, with a side of fossil fuels
The way we grow and distribute food today is deeply dependent on fossil fuels, yet that dependence can feel invisible. Sustainable food systems researcher Prof. Jennifer Clapp joins the show to walk us through all the ways fossil fuels are used to produce one simple food item: a tortilla chip. Along the way, we’ll explore the hard work being done to eliminate climate pollution from the food we eat
2°C: the story of the global climate goal
The landmark Paris Agreement of 2015 gave the world a shared target for halting climate change: that global warming should stop well short of 2 degrees Celsius. But how did that target come about, and what exactly does it mean? Prof. Maria Ivanova, a specialist in international environmental policy, shares with us the history and diplomacy behind those crucial 2 degrees.For a deeper dive and addit
Slow carbon, fast carbon
The Earth naturally absorbs some of our climate pollution from burning fossil fuels. But how much, and how fast? Geophysicist Prof. Daniel Rothman joins the podcast to explain the nature and scale of the natural carbon cycle, and how our appetite for fossil fuels has pushed it out of balance.For a deeper dive and additional resources related to this episode, visit: For more episodes of TILclimate
Is it safe to store CO2 underground?
Today, companies are storing millions of tons of carbon dioxide underground every year to prevent this climate pollution from warming the planet. In the future it might be billions of tons. But is it dangerous to pump so much liquefied carbon below our feet? Geologist and carbon storage expert Prof. Bradford Hager joins the podcast to explain the risks and how to avoid them.For a deeper dive and a
An introduction to carbon capture (re-air)
What if there was a way to continue using fossil fuels for energy without emitting CO2 into the atmosphere? To prepare for a new listener question about carbon capture, we're re-airing this season two episode in which Dr. Howard Herzog and Professor Brad Hager talk about capturing, using, and storing carbon emissions, and how it fits into a clean energy future.
How clean is green hydrogen?
Is hydrogen fuel a climate solution? That depends on how you produce it. Dr. Emre Gençer of the MIT Energy Initiative takes us on a tour of the hydrogen spectrum, from climate-polluting “gray” hydrogen made from natural gas to the much more promising “green” hydrogen made with renewable electricity.For a deeper dive and additional resources related to this episode, visit: For more episodes of TILc
Why are EVs more popular than hydrogen cars?
Just 20 years ago, hydrogen cars and battery electric cars were pretty evenly matched as clean alternatives to gas-powered vehicles. But today, batteries are way ahead: the big car companies are rapidly electrifying their lineups, while only a few hydrogen cars are available. What happened? Sergey Paltsev, senior research scientist at the MIT Energy Initiative, helps TILclimate answer this listene
An introduction to hydrogen energy (re-air)
Hydrogen gas acts like a fossil fuel, but with no carbon emissions. Is it the silver bullet we’ve been waiting for? To prepare for some new listener questions about hydrogen energy, we're re-airing this season four episode in which Prof. Svetlana Ikonnikova of the Technical University of Munich explains how hydrogen works and its potential in the energy transition.For a deeper dive and additional
Do wind turbines kill birds?
Wind power is the largest source of clean, renewable energy in the United States. But the large turbines that create that power can endanger wildlife. MIT Professor Michael Howland returns to the podcast to answer a listener's question about the risks of wind energy to birds—and explain how wind turbines compare to coal plants, power lines, office towers, housecats, and other threats to birdlife i
Do wind turbines freeze up in the cold?
You might have heard how wind turbines failed in Texas during a terrible cold front in 2021. Does this mean we can’t rely on this clean, renewable source of energy when the weather turns extreme? MIT Professor Michael Howland joins the podcast to explain how wind turbine operators prepare for frigid conditions, and why some turbines failed in Texas while others are working fine in Antarctica.For a
Won’t more CO2 help plants grow?
Plants take in CO2 from the air to grow—and today’s atmosphere has about 50% more CO2 than it did before we started burning massive amounts of fossil fuels. So, is that great news for plants? Prof. David Des Marais, a plant ecologist at MIT, helps answer this listener question.For a deeper dive and additional resources related to this episode, visit: For more episodes of TILclimate by the MIT Envi
Season 6 Preview: Something a Little Different
The sixth season of Today I Learned: Climate is coming in two weeks, and this time we’re doing something a little different. People all around the world write into our team with questions about climate change. So this season, we’re working with scientists and experts at MIT and beyond, to answer those questions in language we can all understand.
Why does it take five years to build a wind farm?
The United States has a goal to power the country with 100% clean electricity by 2035. Unfortunately, our energy regulations are not set up to make this much change this quickly. Energy economist John Parsons of MIT joins the show to explain how much clean energy infrastructure we need to build, the obstacles to building it, and reform ideas to transform our energy system on the timeline our clima
Energy storage: keeping the lights on with a clean electric grid
The large majority of new energy we’re building today comes from clean, renewable wind and solar projects. But to keep building wind and solar at this pace, we need energy storage: technologies that save energy when the weather is favorable, and use it when wind and sun are scarce. Prof. Asegun Henry joins TILclimate to explain how energy storage works, what storage technologies are out there, and
A public health expert’s guide to climate change
We all want to live full, healthy lives. But climate change is threatening a growing number of people’s lives and well-being. Amruta Nori-Sarma, assistant professor of environmental health at Boston University School of Public Health, joins the show to help us see climate change not in tons of carbon dioxide, but as a matter of health.For a deeper dive and additional resources related to this epis
TILclimate presents: What the heck is El Niño, anyway? (from Outside/In)
We were going to produce an episode on El Niño, and its relationship to climate change. And then we found out that Outside/In, from New Hampshire Public Radio, already did that. And they did a really good job. So please enjoy this episode of Outside/In, where you'll learn what El Niño is, how to tell if extreme weather events are caused by climate change or by El Niño, and what the powerful El Niñ
Wildfires and how we're changing them
If you live in the U.S. Mountain West, the Pacific Coast of the Americas, or large parts of Australia or southern Europe, there’s a good chance a major wildfire has passed near you in the last five or six years—maybe one more intense than anything you’ve ever heard of in your area. But why exactly are wildfires getting worse? Is climate change entirely to blame? And what should we be preparing for
Can desalination solve water scarcity?
Today we’re talking about desalination: turning saltwater into freshwater, so we can drink it or use it to grow crops. And we’re talking about this because, in many parts of the world, freshwater is getting harder to come by. So… is converting saltwater a good solution? Our guest Prof. John Leinhard has devoted his whole career to this question—and its relationship with climate change.For a deeper
Don’t throw away your refrigerator
Refrigerants are in every refrigerator, freezer and air conditioner, and the world is on track to make a lot more of them in the years to come. They’re also powerful greenhouse gases: often thousands of times more warming than carbon dioxide. Prof. Ronald Prinn, an expert in the physics and chemistry of our climate system, joins TILclimate to discuss the past, present and future of how these chemi
How tackling methane cools the planet fast
Carbon dioxide—CO2—is the greenhouse gas you’ve probably heard most about, on this podcast and elsewhere. But it turns out, methane is an incredibly important greenhouse gas too. Stopping methane emissions today is a powerful way to dampen climate change in the very near term—to keep the Earth cooler in the next 10 or 20 years. So today, Prof. Desiree Plata returns to TILclimate to tell us—how do
Wait, how do greenhouse gases actually warm the planet?
You probably know that today’s climate change is caused by certain gases—what scientists call greenhouse gases—that human activity has been adding to our atmosphere. But—how do these gases actually keep heat from escaping into space? And why these gases in particular? To help answer these questions, we invited Desiree Plata, an associate professor in the Department of Civil and Environmental Engin
Coming Soon: TILclimate Season 5
This is MIT’s climate change podcast, Today I Learned: Climate. If you're looking to get smart quick on climate change – without the jargon and without the politicking – this podcast is for you! In each episode, we work with experts at MIT and beyond to explain climate change science and solutions in fifteen minutes or less.On October 5, TILclimate is returning for our fifth season! We’ll give you
America’s Big Year of Climate Action
On August 16, 2022, President Joe Biden signed into law the Inflation Reduction Act (IRA). It was the largest of three bills signed over the course of 10 months that together make up the United States’ largest investment in addressing climate change… well, ever. Dr. Liz Reynolds, lecturer in MIT's Department of Urban Studies and Planning and former Special Assistant to the President for Manufactur
Announcing TILclimate's Live Event: "America’s big year of climate action"
On Wednesday, April 19, TILclimate will host its first live event at the MIT Museum in Cambridge, Massachusetts! Reserve your seat at tilclimate.org to watch a live recording and join the questions as your host Laur Hesse Fisher sits down with MIT lecturer and former Special Assistant to the President for Manufacturing and Economic Development Dr. Elisabeth Reynolds about “America’s big year of cl
TIL about recycling
We often hear about recycling as a way to make an impact on climate change right in your own home. But how big a difference are we really making when we recycle? For this episode, Anders Damgaard, senior researcher at the Technical University of Denmark, joins the TILclimate podcast to help us understand the climate benefits of recycling—and why they depend on what we’re recycling and how.For a de
TIL about winter storms
Winters are warming faster than any other season here in the U.S. So why are some winter storms getting even more intense? Today, we’re going to explore the connections between climate change and extreme winter weather. For this episode, we sat down with atmospheric science expert Dr. Jennifer Francis of the Woodwell Climate Research Center.Dr. Jennifer Francis is a senior scientist at the Woodwel
TIL about carbon offsets
What if you could pay someone else to cancel out your carbon emissions? As countries, organizations, and even individuals around the world commit to lowering their impact on the climate, many have been doing just that. So today, we’re going to look at how “carbon offsets” work and whether they are an effective tool for slowing climate change. For this episode, we sat down with carbon trading and o
TIL about everyday travel
Roughly ten percent of the world’s CO2 emissions come from passenger vehicles: cars, pickups, motorcycles, buses, and taxis. So today, we’re going to zoom in on how people get around every day and what to consider when thinking about reducing carbon emissions from everyday travel. For this episode, we sat down with our former MIT colleague and transportation expert Dr. Joanna Moody.For a deeper di
TIL about electric cars
Electric vehicles (EVs) are being touted as a major solution to climate change. But why is that? How do they work and what kinds of changes are needed as more EVs hit the road? To dig into this, we brought in MIT Sloan Prof. David Keith, who studies transportation technology. For a deeper dive and additional resources related to this episode, visit: https://climate.mit.edu/podcasts/til-about-elect
TIL about hydrogen energy
Hydrogen gas acts like a fossil fuel, but with no carbon emissions. Is it the silver bullet we’ve been waiting for? Prof. Svetlana Ikonnikova of the Technical University of Munich joins us to bring light to how hydrogen works and its potential in the energy transition.For a deeper dive and additional resources related to this episode, visit: https://climate.mit.edu/podcasts/til-about-hydrogenFor m
TIL about the changing ocean (part 2)
The ocean is a critical piece of the climate change puzzle. It's estimated that the ocean has absorbed about one third of the excess CO2 humans have added to the atmosphere and more than 90% of trapped heat in the atmosphere. So, today, we’re going underwater to talk about the ocean and climate change with renowned oceanographer Dr. Sylvia Earle.For a deeper dive and additional resources related t
TIL about the changing ocean (part 1)
The ocean is a critical piece of the climate change puzzle. It's estimated that the ocean has absorbed about one third of the excess CO2 humans have added to the atmosphere and more than 90% of trapped heat in the atmosphere. So, today, we’re going underwater to talk about the ocean and climate change with renowned oceanographer Dr. Sylvia Earle.For a deeper dive and additional resources related t
Season 4 Preview
At MIT, we have a commitment to sharing what we know about climate change. That’s why, this summer, we’ll be back soon with a fourth season of TILclimate, bringing you new episodes that dive into even more climate topics, like the role the ocean plays in our climate, solutions for reducing transportation emissions, the future of hydrogen energy, and a whole lot more. All around 10-15 minutes, with
TIL what it costs
Today’s episode is about the money of climate change. When people talk about how much it costs to stop climate change, what are we paying for? And who’s paying, exactly? And if we don’t pay to stop climate change – how much will that cost us? To answer these questions, we spoke with Dr. Barbara Buchner from the Climate Policy Initiative.For a deeper dive and additional resources related to this ep
TIL about what I eat
Today we bring climate change to the dining room table. In this episode, we reinvited Dr. Cynthia Rosenzweig onto the TILclimate podcast to tell us just a little more about the connections between the food we eat and climate change.For a deeper dive and additional resources related to this episode, visit: https://climate.mit.edu/podcasts/til-about-what-I-eatFor more episodes of TILclimate by the M
TIL about farming a warmer planet
Over the last fifty years, our world has made remarkable progress in reducing hunger around the world. How can we keep our farms and food system resilient in a warming climate? Dr. Cynthia Rosenzweig, Senior Research Scientist at the NASA Goddard Institute for Space Studies, joins host Laur Hesse Fisher on this episode of TILclimate to explain how climate change is already impacting our global foo
TIL about planting trees
In our last episode, we talked about using technology to suck out extra carbon dioxide from the atmosphere. But you might also be thinking—don’t trees do that? Yeah, they do! In fact, some people have proposed that by planting enough trees, we could make a big dent on climate change. In this episode of TILclimate, Massachusetts Institute of Technology professor Charles Harvey helps us answer the q
TIL about removing CO2 from the atmosphere
We’ve had people ask us, if climate change is caused by adding too much CO2 into the atmosphere, can’t we just suck it back out? Won’t that solve our climate change problem? In this episode of TILclimate (Today I Learned: Climate), Professor Niall Mac Dowell of Imperial College London joins host Laur Hesse Fisher to demystify the process and feasibility of removing CO2 from the atmosphere.For a de
TIL about national security
Is climate change really a national security issue, in the same way we think about terrorism or nuclear weapons? And if so, what are our governments doing about it? In this episode of TILclimate (Today I Learned: Climate), national security expert Alice C. Hill joins host Laur Hesse Fisher to help answer these questions.For a deeper dive and additional resources related to this episode, visit: htt
TIL about sea level rise, part 2
Sea level rise is already happening and affecting people right now. We invited Prof. James Renwick back to TILclimate to talk about the near future: what will sea-level rise look like for coastal areas in the next 20 or 30 years, and what can we do about it?For a deeper dive and additional resources related to this episode, visit: https://climate.mit.edu/podcasts/til-about-sea-level-rise-part-2For
TIL about sea level rise, part 1
If you’ve heard only one thing about climate change, it might be that sea levels are rising, and many of the Earth’s islands and coastlines are at risk. But, why? In this episode of TILclimate (Today I Learned: Climate), Professor James Renwick of Victoria University of Wellington in New Zealand joins host Laur Hesse Fisher to break down the science of sea level rise and what’s in store for the fu
TIL what Americans think about climate change
Surveys show that both left- and right-leaning Americans support policies that slow climate change. So why aren’t we seeing more of these policies pass as legislation? In this episode of TILclimate (Today I Learned: Climate), MIT alum Parrish Bergquist joins host Laur Hesse Fisher to explain the significance of public opinion and climate change: what people believe, what influences their opinion a
Season 3 Preview
Climate change can be confusing, and there’s so much to know. That’s why we’re back with a third season of TILclimate, bringing you new episodes that explain the basics, like why exactly is sea level rising, how climate change affects our national security, how can soils and trees be part of the solution, and so much more. All with real scientists and experts who can give you the straight story, i
Is it too late?
Is it too late to prevent climate change? Are the scary predictions that we hear about inevitable? In this episode of TILclimate (Today I Learned Climate), MIT Prof. Noelle Selin joins host Laur Hesse Fisher to answer these questions. They explore what change is predictable, explain what climate goals like 1.5 C mean, and give insight to what it will take in order to achieve them.Prof. Noelle Seli
TIL about cleaning up clean tech
Technologies like solar panels and batteries help us slow down climate change, but they’re not inherently perfect. In this episode of TILclimate (Today I Learned Climate), Suzanne Greene of the MIT Center for Transportation and Logistics and the MIT Environmental Solutions Initiative sits down with host Laur Hesse Fisher to help us navigate how to massively scale up clean tech while making a consc
TIL about fusion energy
Let’s talk about a technology that could change our whole energy system, but so far hasn’t generated a single watt. In the season finale of TILclimate (Today I Learned Climate), Professor Dennis Whyte sits down with host Laur Hesse Fisher to talk about fusion energy.Dennis Whyte is the Director of the MIT Plasma Science and Fusion Center (PSFC), and a Hitachi America Professor of Engineering. As d
TIL about carbon capture
This season, we’ve talked about alternative energy sources that don’t emit carbon dioxide -- but what if there was a way to continue using fossil fuels for energy without emitting CO2 into the atmosphere? In this episode of TILclimate (Today I Learned Climate), Dr. Howard Herzog and Professor Brad Hager sit down with host Laur Hesse Fisher to talk about capturing, using, and storing carbon emissio
TIL about nuclear energy
We know how to generate tons of electricity without pumping greenhouse gases in the atmosphere, using a technology that’s already mature, widespread, and competitive with fossil fuels -- and also, very controversial: nuclear power. In this episode of TILclimate (Today I Learned Climate), Prof. Jacopo Buongiorno, Director of the MIT Center for Advanced Nuclear Energy Systems, sits down with host La
TIL about energy efficiency
We hear a lot about technologies that produce carbon-free energy, but what about actually using less energy to begin with? In this episode of TILclimate (Today I Learned Climate), Harvey Michaels, lecturer at the MIT Sloan School of Management, joins host Laur Hesse Fisher to explore the three ways that energy efficiency can help us reduce carbon emissions.Harvey Michaels, an MIT alumnus now lectu
TIL about wind and solar
What will it take to generate the electricity our society needs, without generating carbon emissions? In this episode of TILclimate (Today I Learned Climate), Dr. Magdalena Klemun at the MIT Institute for Data, Systems and Society joins host Laur Hesse Fisher to begin exploring this question, starting with wind and solar power. What exactly are wind and solar power? What challenges do we currently
Is it energy or electricity?
In this mini-episode of TILclimate (Today I Learned: Climate), host Laur Hesse Fisher breaks down what we’re actually talking about when we use the word “energy”. In a few minutes, we cover the difference between energy and electricity, and the big picture strategy for how to reduce CO2 for each.Season two of TILclimate focuses on our global energy system, its relationship to climate change, and w
TIL about fossil fuels
Fossil fuels -- coal, natural gas, and oil -- provide the large majority of our power in the United States and around the world. In this episode of TILclimate (Today I Learned: Climate), John Reilly of the MIT Sloan School of Management joins host Laur Hesse Fisher to demystify fossil fuels: what are the different kinds of fossil fuels, and how do they compare to each other? What is “fracking” and
TIL about the electric grid
The electric grid are networks that carry electricity from central power plants to our homes. But how exactly is electricity generated and brought to our door? And what needs to change if we’re going to transition to generating “clean” electricity? In this episode of TILclimate (Today I Learned: Climate), Harvey Michaels, lecturer at the MIT Sloan School of Management, joins host Laur Hesse Fisher
TIL what I can do
Here at TILclimate (Today I Learned: Climate), there’s one question we get from our listeners more than any other: “What can I do to make a difference on climate change?” In this special episode of the podcast, three guests who have made acting on climate a big part of their lives join interim host Aaron Krol to share their stories and their advice for those who want to do more. Together, we discu
TIL about geoengineering
When talking about climate change solutions, we often hear about reducing emissions and adapting to climate impacts, but a third option is starting to get more attention: altering the atmosphere. In this episode of TILclimate (Today I Learned: Climate), MIT alumnus Janos Pasztor joins host Laur Hesse Fisher to explain geoengineering: what it is and the different technologies that are being resear
TIL about carbon pricing
What exactly is a carbon price, and how does it work? What would it look like and how would it change everyday life? In this episode of TILclimate (Today I Learned: Climate), MIT economics professor Christopher Knittel joins host Laur Hesse Fisher to break down the complexities of carbon pricing. Together, they explain different types of programs, give us a sense of how much it would cost, and e
TIL about climate impacts
With climate change, some parts of the world will get more water, but others will experience droughts. Some will start seeing more mosquitoes, but some fewer. And some regions might actually benefit economically. What’s the deal? In this episode of TILclimate (Today I Learned: Climate), MIT professor Elfatih Eltahir joins host Laur Hesse Fisher to talk about how climate impacts will differ across
TIL about uncertainty
How do we make choices in the face of uncertainty? In this episode of TILclimate (Today I Learned: Climate), MIT professor Kerry Emanuel joins host Laur Hesse Fisher to talk about climate risk. Together, they break down why the climate system is so hard to predict, what exactly scientists mean when they talk about “uncertainty”, and how scientists quantify and assess the risks associated with clim
TIL about hurricanes
Scientists predict that hurricanes will hit us harder in the future — but why? And what can we expect to see? In this episode of #TILclimate (Today I Learned: Climate), MIT professor Kerry Emanuel joins host Laur Hesse Fisher to break down how these “heat engines” work and how a changing climate will increase hurricane intensity, storm surges, and flooding. They also explore how people around the
TIL about materials
Humans use around 90 billion metric tons of materials every year, creating about ⅓ of total global greenhouse gas emissions. Which materials produce the most emissions? You might be surprised.
In this episode of TILclimate (Today I Learned: Climate), MIT professor Elsa Olivetti joins host Laur Hesse Fisher to talk about materials, or as Prof. Olivetti calls it, “the study of stuff”. Prof. Olivett
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