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.

440: Destroy and Rebuild, Pt. 4: Supervolcanoes! Astronomy Cast 440: Destroy and Rebuild, Pt. 4: Supervolcanoes! by Fraser Cain & Dr. Pamela Gay

439: Destroy and Rebuild, Pt. 3: How Do We Terraform Earth? Astronomy Cast 439: Destroy and Rebuild, Pt. 3: How Do We Terraform Earth? by Fraser Cain & Dr. Pamela Gay

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 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?

438: Destroy and Rebuild, Pt. 2: Geoengineering Astronomy Cast 438: Destroy and Rebuild, Pt. 2: Geoengineering by Fraser Cain & Dr. Pamela Gay

437: Destroy and Rebuild, Pt. 1: The Torino Scale Astronomy Cast 437: Destroy and Rebuild, Pt. 1: The Torino Scale by Fraser Cain & Dr. Pamela Gay

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!

436 Bonus: Moon Cheeziness Astronomy Cast 436 Bonus: Moon Cheeziness by Fraser Cain & Dr. Pamela Gay

436: Common Misconceptions in Probability Astronomy Cast 436: Common Misconceptions in Probability by Fraser Cain & Dr. Pamela Gay