Why elephants never forget

58:55

Last century, earthquakes killed over one million, and it is predicted that this century might see ten times as many deaths. Yet when an earthquake strikes, it always takes people by surprise. So why hasn't science worked out how to predict when and where the next big quake is going to happen? This is the story of the men and women who chase earthquakes and try to understand this mysterious force of nature. Journeying to China's Sichuan Province, which still lies devastated by the earthquake that struck in May 2008, as well as the notorious San Andreas Fault in California, Horizon asks why science has so far fallen short of answering this fundamental question.

Horizon • 2009 • Environment

58:40

Craig Reucassel investigates our transport emissions, which are the second major contributor to our total carbon emissions. He explores how we can make the move from petrol guzzlers to electric vehicles.

S1E2 • Fight For Planet A: Our Climate Challenge • 2020 • Environment

41:53

A supermassive black hole is moving toward Earth at almost the speed of light. As it approaches our planet, its enormous gravitational forces triggers natural disasters larger than any the world has seen.

S1E2 • Doomsday: 10 Ways the World Will End • 2016 • Environment

58:58

A look at humans who live in the depths of the rainforest, a perilous environment.

S1E4 • Human Planet • Environment

90:27

Two-thirds of our planet is covered in water, split into five distinct oceans, but in reality, Earth's seas are part of one huge global water system - a system that has been instrumental in shaping our destiny for millions of years. Now, however, in the 21st century, it is mankind that is shaping the destiny of our oceans. In unprecedented ways, humans are changing our seas and the life within. The ocean bed, the currents, marine life, even the water itself is transformed by what we are putting into our oceans.

2020 • Environment

44:00

From artificial photosynthesis to vegan diets, changes in science and behavior are helping improve Earth's air quality.

S1E2 • Age of Humans • 2021 • Environment