Put on some safety goggles as Dr Chris Smith and the Naked Scientist team tackle the science questions you've been asking. Including: What do you do if you get pregnant in space? How do anti-depressants work? And how do we know how old planet earth is? Get the podcast from the BBC Sounds app.

The hottest science news, stories and analysis with Dr Karl

Put on some safety goggles as Dr Chris Smith and the Naked Scientist team ignite your bunsen burners with the hottest science news stories, analysis and breakthroughs. This time, how cell transplants can boost wound and tissue repair, using caffeine to perk up solar panel performance, and energy efficient ways of cooking with a conscience.

Dr Chris Smith and the Naked Scientist team tackle discoveries and oddities with a team of experts in a special live show recorded at the Edinburgh Science Festival.

5 live's science podcast, featuring Dr Karl from Up All Night.

Dr Chris Smith & the team discuss cancer killing immune systems, sharks with cameras, and the Space Twins.

5 live's science podcast, featuring Dr Karl from Up All Night.

Dr Chris Smith and the Naked Scientists answer your science questions. Including: is the sugar in fruit better than that in a donut? How do reflective jackets work? And why do bright lights make some people sneeze? Get the podcast from the BBC Sounds app.

Rhod Sharp is joined by Dr Karl and oceanographer Dr Veronique Lago to answer questions.

Dr Chris Smith and the team this week are sniffing out Parkinsons, travelling to Mars, and looking at the cutting edge of material science.