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The Big Switch

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...


Apr 21, 2022

Steel goes into pretty much everything around us – from buildings and bridges to the furniture in our homes. And decarbonizing the steel industry is essential because we need steel to decarbonize the world. Think about it. Solar panels, electric vehicles, even our power grid; steel goes into everything we need to fight...