Dr Karl answers your questions on all things science.

Put on some safety goggles as Dr. Chris Smith and the Naked Scientist answer your science questions. Featuring: Are plastics now in the fish we're eating? Can electrical devices affect your fertility? And will robots take over our jobs thanks to the development of artificial intelligence?

Dr Karl answers questions on movement in space and car headlights.

Chris Smith and the science team answer your questions.

Dr Karl answers questions on rainbows

Blood tests that detect cancer, why the kilogram is changing, and a look at modern manufacturing

Dr Karl discusses the extraction of Geothermal energy.

How being a morning person can reduce a risk of cancer, using drones and AI to check ocean health, and how science from WW1 is helping people with brain injuries today. Plus the science of samba, what makes a good dancer?

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.