Last Watched

"Energy"  Sort by

Can We Hack the Planet

   2017    Technology
Humanity is under threat - from storms that seem to get ever fiercer, earthquakes that seem ever more deadly, and killer viruses that are engulfing the globe. Some scientists think it's time for us to fight back. Can we - should we -hack the planet?
Series: Through the Wormhole Season 8

Building the Sun The 250 Million Degree Problem

   2017    Technology
Scientists investigate the way the Sun builds its power -- through fusion -- hoping to find a way to use fusion as a less dangerous and less radioactive waste-producing path to energy than fission. But there are some major difficulties along the way. Fusion really is the perfect way to make energy. We have millions of years worth of fuel. It produces no long-lived radioactive waste. If we can solve the engineering challenges, energy will become cheaper, more available for everybody.
Series: Catalyst

Revelations and Revolutions

   2014    Science
Electricity is not just something that creates heat and light, it connects the world through networks and broadcasting. After centuries of man's experiments with electricity, the final episode tells the story of how a new age of real understanding dawned - how we discovered electric fields and electromagnetic waves. Today we can hardly imagine life without electricity - it defines our era. As our understanding of it has increased so has our reliance upon it, and today we are on the brink of a new breakthrough, because if we can understand the secret of electrical superconductivity, we could once again transform the world.
Series: Shock and Awe: The Story of Electricity

The Invisible Universe

   2018    Science
It is one of the most unnerving discoveries in space science - that most of the universe is missing. We live in a material world, so instinctively we know what normal matter is - the world around us, the planets, stars and interstellar dust. But scientists currently estimate that 95 per cent of everything in the universe is actually - one way or another - invisible. Some of this is ordinary matter that we just can't easily see. But there's also stuff that's much more weird. For instance, there's a new kind of matter we think is out there, but whose very existence is still largely hypothetical - dark matter. And most mysteriously of all, scientists think there is an unknown form of energy pervading the universe that we know so little about, all it has so far is a name - dark energy. Embark on a tour of this invisible universe, and shows how its existence - or lack of it - will define the fate of the entire universe.
Series: The Sky at Night

The Beauty of Maps
The Beauty of Maps

   2010    Art
Africa with David Attenborough
Africa with David Attenborough

   2013    Nature
The Virtual Revolution
The Virtual Revolution

   2010    Technology
Bible's Buried Secrets
Bible's Buried Secrets

   2011    Culture
Galapagos
Galapagos

   2006    Nature
Wings
Wings

      Nature
Galapagos with David Attenborough
Galapagos with David Attenborough

   2013    Nature
Dangerous knowledge
Dangerous knowledge

   2007    Science