In part two, Professor Al-Khalili looks at the 19th century chemists who struggled to impose an order on the apparently random world of the elements. From working out how many there were to discovering their unique relationships with each other, the early scientists' bid to decode the hidden order of the elements was driven by false starts and bitter disputes. But ultimately the quest would lead to one of chemistry's most beautiful intellectual creations - the periodic table.
Category:Science Duration:58:48 Series: Chemistry
North America - 13,000 years ago While the world was still in the grip of the last ice age, humans first crossed Siberia and entered the New World. They encountered creatures familiar to them from their travels, such as the woolly mammoth and the steppe bison, but also a whole host of new marvels. The Americas was the only continent where humans ever came face to face with sabre-toothed cats, giant ground sloths or the massive short-faced bears. As the climate warmed and the ice melted, all these megafaunal marvels vanished. What or who was responsible for their demise?
Category:Science Duration:48:00 Series: Monster we met
SETTING: 70 million years ago in Europe, near present-day Romania. Pod, a male pyroraptor, is alone in the world after his sisters die in a tidal wave that sweeps him out to sea. After landing on an island populated with dwarf-sized dinosaurs, Pod discovers that he's become the apex predator. But, Pod learns it's lonely at the top.
Category:Science Duration:48:23 Series: Dinosaur Planet
Thirty years ago, scientists first realized that some unknown dark substance was affecting the way galaxies moved. Today, they think there must be five times as much dark matter as regular matter out there. But they have no idea what it is - onl that it's not made of atoms, or any other matter we are familiar with. And Dark Matter is not the only strange substance in the Universe - a newly discovered force, called Dark Energy, seems to be pushing the very fabric of the cosmos apart.
Category:Science Duration:43:00 Series: Through the Wormhole
|Showing 125||- 128||of 253||<<||<||>||>>|