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The Big Switch

Jun 29, 2022

It’s officially summer in North America, and that means one thing – it’s getting hot. Every year, heat waves are the deadliest extreme weather event, and they’re only getting more severe. Often, the people who fall victim to heatwaves are those who are left without access to air conditioning. Dr. Diana...


Jun 16, 2022

In this episode, we’re touring a home with a buildings doctor. Ian Hamilton is a professor of energy, environment and health at University College London. Together, Melissa and Ian show us the parts of our homes we need to upgrade to zero out carbon emissions—and to keep us safe in a more dangerous, changing...


Jun 2, 2022

This week on the show, we meet someone on a mission: to decarbonize America’s buildings. Decarbonizing buildings is is actually a huge piece of decarbonizing our economy: carbon pollution from heating, cooling, and powering our buildings accounts for 30 percent of U.S. carbon emissions – that includes our homes,...


May 20, 2022

Ninety-five. That’s the number of times we've mentioned hydrogen on The Big Switch over the past 18 episodes. This week, we’re taking a step back to ask what IS hydrogen? And how can it help decarbonize the economy?

It turns out, there’s a whole rainbow of hydrogen fuel – gray hydrogen, blue hydrogen, even...


May 4, 2022

Hydrogen could be essential for the zero-carbon economy, especially for cleaning up concrete, steel, and chemicals. It’s also a promising fuel source for transportation and electricity that's attracted hundreds of billions of dollars in global investment.

But there’s a problem. Every year, the world produces...