Ep. 441: Destroy and Rebuild, Pt. 5: Continental Drift

Want to travel the world but you don’t have a lot of money? No problem, your continent is drifting across the surface of the Earth right now. In a few million years, you’ll reach your destination. We usually record Astronomy Cast every Friday at 1:30 pm Pacific / 4:30 pm Eastern / 21:30 PM UTC […]

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Ep. 440: Destroy and Rebuild, Pt. 4: Supervolcanoes!

There are regular volcanoes, and then there are the supervolcanoes. Massive calderas of hot magma of incomprehensible size. Bad news, these things explode randomly and catastrophically. Worse news, there are a bunch around the Earth. We usually record Astronomy Cast every Friday at 1:30 pm Pacific / 4:30 pm Eastern / 21:30 PM UTC (9:30 […]

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Ep. 439: Destroy and Rebuild, Pt. 3: How Do We Terraform Earth?

We always want to talk about how we can make Mars more Earth like, but the reality is that we’re making Earth more Venus-Like. We’re Venusforming Earth. What are the various factors we’re impacting on a global scale, and how can we fix them? We usually record Astronomy Cast every Friday at 1:30 pm Pacific […]

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Ep. 438: Destroy and Rebuild, Pt. 2: Geoengineering

We know humans are having an impact on planet Earth, but what if we really put our backs into it, and intentionally tried to change the entire planet? Either to make it better, or to fix some terrible mistake we’ve made. The technique is called geoengineering. Could it work? We usually record Astronomy Cast every […]

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AC437

Ep. 437: Destroy and Rebuild, Pt. 1: The Torino Scale

We love to destroy the universe, and also rebuild it. Today we begin a new series where we destroy and rebuild. Let’s talk about some existential threats we face, and ways we could recover, starting with the sword of Damocles hanging over our head: killer asteroids! We usually record Astronomy Cast every Friday at 1:30 […]

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Ep. 436: Common Misconceptions in Probability

Human beings are bad at many things, but we’re particularly terrible at understanding probability in a rational way. We underestimate, overestimate and generally mess up probability. We’ll try to fix it here, but we’ll surely fail. We usually record Astronomy Cast every Friday at 1:30 pm Pacific / 4:30 pm Eastern / 21:30 PM UTC […]

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Ep. 435: The Butterfly Effect

Small changes can have a big impact. But can a butterfly’s wingbeat in the Amazon really impact the weather halfway across the world? And where do small changes have no impact? We usually record Astronomy Cast every Friday at 1:30 pm Pacific / 4:30 pm Eastern / 21:30 PM UTC (9:30 GMT). You can watch […]

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Ep. 434: Am I On An Alien World?

Once again, science fiction television and movies has let you down. They try to recreate what it might be like on an alien world, but surprise surprise, they mostly get it wrong. That’s because a truly alien world would be different in so many ways, it would blow your mind. Today we’ll help you figure […]

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Ep. 433: Volcanoes on Mars

Mars is a world of extremes. This unassuming red world is home to the largest and tallest volcanoes in the entire Solar System. In fact, it’s not even a close contest, with Olympus Mons rising 22 km above the surrounding plains, more than twice as tall as Mount Everest. How did Mars get such big […]

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Ep. 432: Geoglogic Ages of Mars – From Wet and Wild to Desolate Desert

Today, Mars is a desolate wasteland, with dusty red rocks and sand stretching out to the horizon. But billions of years ago, it was a vastly different world. It was blue, with oceans, rivers, lakes, and maybe life? Let’s tell the story of geology on Mars, and we got from that world to the one […]

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