If Earth's lifespan were to be compressed into one calendar year, humanity would show up just before midnight on December 31st. Sustainability, what even is it? Dave Attenborough explains on a mountaintop. There is currently no snow in Denver and snow in Hawaii. We interview Harvard sustainability scholar Allegra De Angelo. Mike lets you know this is your last chance to learn about how you can't trust sheep.

Our first musical, "Fashion CEO", brings the house down. Answers to listener questions. Fashion is the #2 polluting industry on the planet. The byproducts of textile mills are more polluting than raw sewage. Katie Macdonough, fashion insider and currently getting her masters in sustainability at Harvard, explains what we can do to help the problems caused by fashion manufacturing. A Hallmark special: It's A Wonderful Fault (That's Everybody's), starring Mike's Jimm...

The sound of a Tesla S vs. the sound of a Bugatti Chiron. Fail safes and safe words. The shocking safety of nuclear energy, and all the people that die from coal. Mike learns the meaning of "babu". Tons of SEXY CAR STATS. Rarr. Ben's Elon Musk impression.

A bedtime story is scarier than anticipated. Interview with Julie McNamara, Senior Energy Analyst at the Union of Concerned Scientists. We discuss areas of the U.S. power grid that are most vulnerable to extreme weather, independence from the grid with renewable energy sources at home, heat pump technology, and the entrenched interests who want to slow down the move to less harmful energy.

A Solo cup's journey and Oldboy (Korean version). Interview with Priya Mittal, co-founder of the Fette cup, a compostable and biodegradable alternative to the plastic party cup. Over 3 million Boeing 757's worth of plastic deposited on the planet yearly. Guess how many of the 7 plastic recycling categories are lies? (Spoiler alert, it's 5). My favorite continent: The Great Pacific Garbage Patch. Plastic's weirdly phallic origin story.

The weather on Venus and why it matters to us. Worldwide climate destruction. Tejas might be a supervillain. Greta Thundberg lays an egg.