This week: alien hunting! Life here on Earth uses DNA, but why, and would aliens be made of the same stuff? Plus, news of how your gut microbes are controlling your genes, a new way to fight phobias, and we get a sneak peek at where the first human colonists of Mars might live...

This week the show comes to you from the Royal Institute of Navigation's annual International Conference, with a look at the future of navigation. From the trousers that can track your every move to the spacecraft charting their way through the Universe. Plus, how does GPS work, and are we ready for driverless cars? Like this podcast? Please help us by supporting the Naked Scientists

This week the show comes to you from the Royal Institute of Navigation's annual International Conference, with a look at the future of navigation. From the trousers that can track your every move to the spacecraft charting their way through the Universe. Plus, how does GPS work, and are we ready for driverless cars?

This week on the Naked Scientists, we've gathered the bright and the brainy to answer your science questions, from why ants are stealing your toenail clippings to what's between your internal organs and could you survive being eaten by a snake? Like this podcast? Please help us by supporting the Naked Scientists

This week on the Naked Scientists, we've gathered the bright and the brainy to answer your science questions, from why ants are stealing your toenail clippings to what's between your internal organs and could you survive being eaten by a snake?

This week on the Naked Scientists we're exploring our human story, from the use of tools and fire, to ritualistic behaviour. Where did we come from and what makes us special? Chris Smith is joined by some of the world's best fossil experts including one man who's discovered two of our caveman ancestors, and a scientist who can get the original tissues out of remains that are millions of years old. Like this podcast? Please help us by supporting the Naked Scientists

This week on the Naked Scientists we're exploring our human story, from the use of tools and fire, to ritualistic behaviour. Where did we come from and what makes us special?

Chris Smith is joined by some of the world's best fossil experts including one man who's discovered two of our caveman ancestors, and a scientist who can get the original tissues out of remains that are millions of years old.

Have you ever wondered why some people enjoy being absolutely petrified by horror films? This week, The Naked Scientists investigate the spooky science of the genre: what does fear look like in the brain, how do you compose the most terrifying soundtrack and can we use psychology to engineer the perfect scare? Like this podcast? Please help us by supporting the Naked Scientists

Have you ever wondered why some people enjoy being absolutely petrified by horror films? This week, The Naked Scientists investigate the spooky science of the genre: what does fear look like in the brain, how do you compose the most terrifying soundtrack and can we use psychology to engineer the perfect scare?

Kat and Chris are turning the lights down low in search of darkness. 80% of Europeans and Northern Americans now can't see the Milky Way. But does this extra light pollution matter? It doesn't harm anyone, or does it? Plus in the news, with the US presidential elections fast approaching, we see what we can learn from animals when it comes to picking a leader. And, do you really lose most of your heat through your head? Like this podcast? Please help us by supporting the Naked Scientists