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Why we still don’t understand sleep, and why it matters

For the first 20 years of his life, Henry Nicholls had a healthy relationship with sleep. Shortly after his 21st birthday, he began to experience symptoms of narcolepsy, a debilitating disorder that’s plagued him ever since. Sleep research is progressing, so why are he and others like him still waiting for a cure?

What's next for the human race?

Even science can’t predict the future. Or can it? Jim Al-Khalili explores the science of the future, delving into transport, medicine, geoengineering, space travel, robots and even teleportation.

Take part in our Big Sleep Survey

Together with Goldsmiths, University of London, BBC Focus is conducting its very first piece of research to find out more about two sleep phenomena: exploding head syndrome and sleep paralysis. 

Do animals fart?

We are all prone to passing a little gas, but there is more than a delicate whiff of flatulence facts floating around some of our stinky friends in the animal kingdom.