This week Dr Chris Smith and his Naked Scientist colleagues report on the chemical recipe for making tomatoes taste great, and the world’s biggest diamond that’s being built in Britain.

On the latest edition of Dr Karl, how your microwave oven can interfere with your home Wi-Fi. How to control the Flow of Heat, with layers just atoms thick. And does caffeine dehydrate you?

How can you walk without splilling coffee, and can actor Anne Hathaway affect the world economy?

Science news with Dr Chris Smith and colleagues. This edition; burning up body fat, the reason why dinosaurs with wind may have "wreaked" havoc with the cretaceous climate and the chimp that plans missile attacks on zoo visitors.

Dr Karl joins Dr Rhod to answer your science questions. This week; where do all the seeds come from and an eyewitness to ball lightning joins us to describe his experience.

Dr Rhod and Dr Karl are joined by food specialist Professor Charles Spence to deal with such tricky questions as; where does the skin on the porridge pan come from?

Dr Chris Smith and the Naked Scientists explore..: why women have evolved out of having beards and hairy chests, and scientists have discovered how homing pigeons’ brains respond to the Earth’s magnetic field enabling them to navigate.

Dr Karl and Dr Rhod discuss the scarcity of helium, the peculiarities of marsupials and the physics of coffee cups.

Why there's so much water underground, a new way to work paralysed body parts by reading brain activity, and a way to heal injured heart tissue by converting scar tissue back into healthy cardiac muscle. They're issues occupying the Naked Scientists this week.

Why aren't humans more hairy? How does a diesel engine work and what exactly is Dr Karl's new planet. That's all on the agenda this week for Dr Karl and Dr Rhod.