BBC Planet Earth – Ice Worlds
The Arctic and Antarctic experience the most extreme seasons on Earth. Time-lapse cameras watch a colony of emperor penguins, transforming them into a single organism. The film reveals new science about the dynamics of emperor penguin behaviour.
BBC Planet Earth – Deserts
Around 30% of the land’s surface is desert, the most varied of our ecosystems despite the lack of rain. Saharan sandstorms reach nearly a mile high and desert rivers run for a single day.
Watch BBC Planet Earth – Deserts now
BBC Planet Earth – Caves
The Cave of Swallows in Mexico is a 400m vertical shaft, deep enough to engulf the Empire State Building. The Lechuguilla cave system in the USA is 193km long with astonishing crystal formations.
BBC Horizon – Most Of Our Universe Is Missing
There was a time, not so long ago, when science seemed to understand how the universe worked. Everything us, the Earth, the stars and even exotic-sounding supernovae was made of atoms which were all created at time-zero: the Big Bang. In between the atoms was nothing, a void: quite literally, ‘space’. But recently things have started to unravel. There is, it seems, a lot more to the universe than meets the eye. According to the best estimates, we only really know what about 4% of it is made of. But if only 4% is made of atoms, what about the rest? The rest is made of mysterious entities about which very little is understood, with equally mysterious names: dark matter and dark energy.
Watch BBC Horizon – Most Of Our Universe Is Missing now
BBC Planet Earth – Mountains
Humans like to think that once they’ve climbed a peak, they’ve somehow conquered it. But they can only ever be visitors to this hostile world.
Planet Earth introduces the ‘real’ mountaineers and discovers the secrets of their survival on the mightiest peaks of our planet.