Why are opossums immune to snake bites? And what's the deal with tasting stuff? Dr Alice Williamson joined Ruby Miles to answer some of these pressing questions.

Dr Alice Williamson came into the studio to tell us about dinosaur dandruff and the asteroid that wiped them out.

Dr. Alice Williamson joined us to confirm our greatest fear (hand driers are spraying poop onto our fingers), and to teach us about green blooded lizards.

Dr Alice Williamson joined Ruby to talk all things brains. We learned that Google DeepMind has developed an internal satnav (all by itself?!), and about Neanderthal brains that are being grown in petri dishes.

Dr. Alice Williamson has finally returned so we can bask in her sciencey glory. It's not all good news though. We talked flesh eating ulcers, and the people who search the sea floor for medicine.

Dr. Alice Williamson is still out of sorts, so Tom Gordon joined us to talk protein caps on DNA and special plastic.

Dr. Alice Williamson is recovering, so our backup scientist Tom Gordon swooped in to save the day. He told us all about a spacecraft on the hunt for alien planets, and tiny robots who can fix your cells from the inside.

We're cursed! Dr Alice Williamson tripped over some loose science on the floor and needed to call in from home. Luckily we still got our knowledge fix, learning about laser beam tweezers and their impact on quantum computers.

Dr Alice Williamson returns to the studio to talk wasp drumming and seriously killer whales.

Tom Gordon joined us for a second week to talk the physics of ball tampering and meat grown in petri dishes.