Ever wonder how the heart symbol came to stand for the actual heart? And why do we speak of the heart as the seat of love, when love really happens in our brains? Is it true that animals only get a billion heartbeats? This week, we give you enough cool cardiac science to make your heart skip a beat.
Why do we sleep? We spend a third of our lives in slumber, but science has yet to determine exactly why we have do it. Here’s a look at how sleep works, why we’re not getting enough sleep, what happens if you DON’T sleep, and an idea about where sleep came from in the first place.
2015 • Health
First in a three-part documentary series offering an insight into the dramatic forces that shape life on Earth, using speeded-up footage that compresses centuries into seconds. The programme follows the movement of mountains, rivers, glaciers and the sea, and offers a glimpse of what the future might hold, revealing how the Great Rift Valley may well be on its way to becoming the next ocean.
Interweaves the present-day story of the Rosens, a young family on an odyssey to find a cure for their four-year old daughter's rare genetic disease, with stories of the exciting discoveries of the early pioneers in genetics — Gregor Mendel, Thomas Hunt Morgan, Francis Crick and James Watson. This episode also tracks the dark period in human history when a little genetic knowledge was used to justify terrifying human experiments that culminated in the Holocaust.