Following publication in October, 2009 of multiple papers on the discovery and study of a 4.4 million-year-old female partial skeleton nicknamed Ardi in the journal Science, Discovery Channel presented a world premiere special, Discovering Ardi that documented the sustained, intensive investigation leading up to this landmark publication of the Ardipithecus Ramidus fossils.

The scientific investigation began in the Ethiopian desert 17 years ago, and now opens a new chapter on human evolution, revealing the first evolutionary steps our ancestors took after

Prepare for lift-off with this stunning, high-definition six-part series chronicling the inside story of NASA’s most epic endeavors. Commemorating the space agency’s 50th anniversary, follow John Glenn’s Mercury mission to orbit the earth, Neil Armstrong’s first historic steps on the moon, unprecedented spacewalks to repair the Hubble stories, and more!

Celebrate mankind’s greatest missions with stories that are literally out of this world, shown in stunning clarity and told by the astronauts and engineers who were there

For most of us, pain as a concept is something that we don’t spare a second thought: you stub your toe; it hurts for a bit, then it subsides. But for scientists, the experience of pain makes for fascinating study and an understanding of it can potentially unlock new methods of treatment and pain relief.

Horizon reveals the latest research into pain and the breakthroughs that have been made, through studies on everyone from a woman in London who has felt no pain in her entire life, to a man in the US who cut off his own arm to survive, after it became lodged in a furnace.

Comedian Ben Miller returns to his roots as a physicist to try to answer a deceptively simple question: what is one degree of temperature?

His quest takes him to the frontiers of current science as he meets researchers working on the hottest and coldest temperatures in the universe, and to a lab where he experiences some of the strangest effects of quantum physics – a place where super-cooled liquids simply pass through solid glass.

Documentary examining current ideas about very large numbers and infinity in regards to mathematics and the observable universe.

By our third year, most of us will have learned to count. Once we know how, it seems as if there would be nothing to stop us counting forever.

But, while infinity might seem like an perfectly innocent idea, keep counting and you enter a paradoxical world where nothing is as it seems.