5 Live Science Podcast

DR KARL discusses whether human saliva is a good cleaning agent? Also, are perpetual motion vehicles a realistic possibility and is thorium a cleaner alternative to nuclear power?

The Naked Scientists answer your science questions, including whether science can help us quit our vices, do animals have accents, and how big can a planet get? Get the podcast from the BBC Sounds app.

Dr Rhod and Dr Karl answer your questions on the carbon cost of electric vehicles and space windmills.

Georgia Mills from the Naked Scientists looks at what happens to fish when coral reefs die, how glowing lungs might help fight hospital infections, and catalysts - the invisible substances which help keep the world running.

While Dr Karl enjoys his holiday, Rhod is joined by science journalist and broadcaster Bianca Nogrady and Dr. Alice Williamson who is a chemist, lecturer and science communicator based at The University of Sydney. Topics include 3D photography, gluing magnets and the difference between male and female birds.

Georgia Mills and the team answer your questions

Rhod is joined by a couple of old hands who can answer your questions; namely freelance science journalist, broadcaster and author Bianca Nogrady and Dr Alice Williamson who is a chemist, lecturer and science communicator based at The University of Sydney

Dr Karl and his guests discuss diets and health.

Chris Smith and the science team answer your questions

Dr Karl discusses the end of the world and convergent evolution.