Meet the team of on-call seismologists responsible for detecting quakes around the globe and raising the alert. Also this week, the mystery of a volcano that caused climate chaos in ad 536, yet which seemed to be missing from the ice-core record used to reconstruct climate change 1. Plus, banishing HIV will take more than just drugs: researchers need to take changeable human behaviour into account.

The Nature Podcast is Nature’s weekly audio round-up of the best science news and research. Subscribe for free through iTunes or other podcasting software to make sure that you don’t miss an episode. Full show notes on the Nature Podcast homepage.