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Life Beyond Venus

   2020    Science
Chris Lintott and Maggie Aderin-Pocock report on the reaction to the dramatic announcement of the discovery of phosphine gas in the clouds of Venus, a gas that could be a sign of life. Venus remains an inhospitable and unlikely host. But if not Venus, where in the solar system is the best place to look for alien life? Chris and Maggie investigate the latest missions to Mars and the icy moons of Jupiter and Saturn. Away from the search for life, Pete Lawrencepreviews the best meteor showers of the year.
Series: The Sky at Night

The Putin Interviews 1of4

   2017    Culture
Oscar-winning filmmaker Oliver Stone was granted unprecedented access to Russian president Vladimir Putin during more than a dozen interviews over two years, with no topic off-limits. This remarkable four-part documentary series provides intimate insight into Putin's personal and professional lives, from his childhood under communism, to his rise to power, his relations with four U.S. presidents, and his surprising takes on U.S.-Russian relations today. Witness the most detailed portrait of Putin ever granted to a Western interviewer.
Series: The Putin Interviews

Is the Universe a Hologram

   2019    Science    HD
Shocking new evidence has convinced some of the world's greatest physicists that the universe is a hologram. Using cutting-edge technology, they investigate the secrets of black holes and space-time to build the case for this game-changing discovery.
The holographic principle is a supposed property of quantum gravity that states that the description of a volume of space can be thought of as encoded on a lower-dimensional boundary to the region like a gravitational horizon. First proposed by Gerard 't Hooft, it was given a precise string-theory interpretation by Leonard Susskind.
The holographic principle was inspired by black hole thermodynamics, which conjectures that the maximal entropy in any region scales with the radius squared, and not cubed as might be expected. In the case of a black hole, the insight was that the informational content of all the objects that have fallen into the hole might be entirely contained in surface fluctuations of the event horizon.
Series: Space Deepest Secrets

Blood Of The Vikings: Rulers

   2001    History
Julian Richards recalls how, after years of raiding, England's resistance was so weakened that, in the early 11th century, the Vikings were finally able to seize the throne. In other parts of the British Isles however, they gained and maintained power by integration.
Series: Blood of the Vikings

Chemistry: The Order of the Elements

   2010    Science
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.
Series: Chemistry

Conquistadors: The Search for El Dorado

   2002    History
Francisco de Orellana failed to find El Dorado, but discovered the Amazon. Early in 1541, a rumor swept Quito that beyond the mountains, there lay a land richer than Mexico, or even Peru - a land of gold. The ruler of this land was so rich that he covered himself with gold dust every day and washed it off every evening. He was "the golden man", El Dorado. They had tree goals: to find La Canela, the land of cinnamon: to assess new lands for colonization; and to find El Dorado. On march 1541, They marched eastwards with more that 200 Spanish troops and thousands of native servants.
Series: Conquistadors
Dinosaur Planet

Dinosaur Planet

2003  Science
Human

Human

2025  History
Planet Earth

Planet Earth

2007  Nature
Dynasties

Dynasties

2018  Nature
Galapagos

Galapagos

2006  Nature
Capitalism A Love Story

Capitalism A Love Story

2009  Culture