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Earth's current problems and how to help in conservation efforts

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Tsunamis

Which places on earth are poised to generate the next mega-tsunamis and the science of what happens as the wave emerges from open ocean and bears down on land.

S1E2Secrets of the Earth • 2013 • Environment

How Many People Can Live on Planet Earth

In a Horizon special, naturalist Sir David Attenborough investigates whether the world is heading for a population crisis.

Horizon • 2009 • Environment

Africa

Geologist Prof Iain Stewart shows how the continent of Africa was formed from the wreckage of a long lost supercontinent. He discovers clues in its spectacular landmarks, mineral wealth and iconic wildlife, that help piece together the story of Africa's formation. But he also shows how this deep history has left its mark on the modern day Africa and the world.

1/4Rise of the ContinentsEnvironment

Understanding our Atmosphere

The air around us is not just empty space; it is an integral part of the chemistry of life. Plants are made from carbon dioxide, nitrogen nourishes the soil and oxygen gives us the energy we need to keep our hearts pumping and our brains alive. But how did we come to understand what air is made of? How did we come to know that this invisible stuff around us contains anything at all?

Environment

The World's Water Crisis

The global water crisis is at an inflection point. How do we price our most valuable resource, while also ensuring access to it as a human right?

S01E19Explained • 2018 • Environment

Recovering from Extinction

How long does it take for life to rebound after a major mass extinction? Scientists in Svalbard dig through fossil clues for surprising revelations about our Earth's history.

Breakthrough • 2019 • Environment