Today's episode is produced in partnership with the Global Challenges Foundation. The foundation is dedicated to raising awareness of global catastrophic risks and strengthening global governance to address them. The Global Challenges Foundation's 2026 Global Catastrophic Risks report outlines five of the biggest risks facing humanity today, including an asteroid colliding with earth, the topic of this episode. You can find the report at globalchallenges.org/gcr-2026.

To discuss the potential consequences of an asteroid impact, and how we have built a system of planetary defense to guard against this risk, I am joined by Romana Kofler, program management officer at the United Nations Office for Outer Space Affairs, and Anja Olin-Pape, head of programs at the Global Challenges Foundation.

We kick off by discussing the ways in which an asteroid impact could disrupt life on Earth and cause mass destruction, before turning to a longer conversation about how international cooperation and global governance have given us the tools to prevent an asteroid impact — and the catastrophe that would entail.