Scalespace

If machines can be smarter than people, is humanity really anything special?

Commentator-comic Bill Maher plays devil's advocate with religion as he talks to believers about their faith. Traveling around the world, Maher...

An all-star cast lead by Richard Dreyfus perform sketches celebrating the bicentennial of the U.S. Constitution, including new animation done by...

In celebration of his ninetieth birthday, Sir David Attenborough shares extraordinary highlights of his life and career with broadcaster Kirsty...

Within the coming decades we will be able to create AIs with greater than human intelligence, bio-engineer our species and re-design matter through...

This shows physicist Stephen Hawking's life as he deals with the ALS that renders him immobile and unable to speak without the use of a computer....

Mila and María are two teenagers who get to know each other through video correspondences they send to each other. One day, they arrange to...

Inside the train from Wengen to Lauterbrunnen, the snow-covered landscape and the darkness of the tunnel, three windows offer serene yet...

In 1973 Alister Barry joined the crew of a protest boat (The Fri) to Mururoa Atoll, where the French Government were testing nuclear weapons. Barry...

In 1587, more than 100 English colonists settle on Roanoke Island and soon vanish, baffling historians for centuries; now, experts use the latest...

A scientist explains how the savagery and efficiency of the insect world could result in their taking over the world.

Nova and National Geographic present exclusive access to an astounding discovery of ancient fossil human ancestors.