Two biologists find out how nature's giants evolved and how they function.
Simon Reeve takes to the high seas for a trip around the edge of the Indian Ocean.
Sir David Attenborough chats to a tawny owl during filming of the second series.
Test your knowledge of David Attenbourough
What is the Eden channel and how can I watch it on my TV?
Ben Miller reflects on the similarities between evolution and comedy.
Greg Foot answers some of the most bizarre science questions, like why is chilli hot?
Get your wellies on at Glastonbury, trek to Machu Picchu or raft the Grand Canyon.
Browse through some beautiful images of our wonderful planet.
Wildlife filmmakers captured hundreds of hours of behaviour some never shown on TV before.
They are constantly circling hundreds of miles above our heads.
It’s one of the most baffling questions that scientists can ask: how big is the Universe?
Wildlife adventurer Nigel travels over 5000 miles following the grey whale migration.
Following the scavenger sharks that live off the remains of their aquatic neighbours.
Kevin Fong sets out to discover how unsuited human biology is to much of the planet.
This incredible story of the reconstruction of one of nature’s most impressive mammals.
From blizzards to gentlest delicate flakes, Let It Snow celebrates snow in all its forms.
Hedgehogs are renowned for their spiky, modified guard hairs.
Everyone has a soft spot for the iconic orang-utan, the king of the swingers.
Up and down the coastline, Nigel Marven meets whale-watchers, scientists and researchers.
Kevin Fong looks at how we can survive underwater and how the body responds to altitude.
The question "why do zebra have stripes?" is one that has been asked a thousand times.
Mike May's sight restored 40 years after he was blinded in a childhood accident.
Whether there is life after death will always be a matter of contention.
Doctors can perform complex medical procedures on our bodies while we sleep.
Despite a green makeover, supermarkets have become the bogeymen of the high street.
Learn all about the Higgs particle and why it's important with our fact file.
We've released five free science articles written by some of your favourite experts.
Sir David Attenborough reveals the animals that have intrigued him the most.
Earthflight producer John Downer on what sets Earthflight apart.
Earthflight producer John Downer on his series Earthflight.
Earthflight producer John Downer on why we should watch Earthflight.
Earthflight producer John Downer on the inspiration for Earthflight.