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As spring lights up the land, Alaska faces one of the greatest transformations on earth. Temperatures soar, and as the sun's rays hit the snow and ice, water, light and warmth return. Alaska's transition to spring may look magical, but for those animals emerging from a long winter's sleep, it's a time of intense competition, as everything is in a rush to cash in on Alaska's riches.
As winter approaches, field teams are finishing up their science for the season. It's the last chance to obtain information for their research on the frozen continent. As most people are preparing to leave, a container ship is on its way in to supply food and materials to the skeleton crew that remains during the cold, dark winter months.
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The last episode deals with the future of conservation. It begins by looking at previous efforts. The 'Save The Whales' campaign, which started in the 1960s, is seen to have had a limited effect, as whaling continues and fish stocks also decline.
3/3 • Planet Earth: The Future • Environment
Earth's metallic core makes the planet a huge magnet, generating a magnetic field that protects us from dangerous cosmic rays and solar energy.
S1E7 • Secrets of the Earth • 2013 • Environment
Iain looks at the big picture of Earth's place in space. It's taken four and a half billions years and several great catastrophes to turn it from a barren rock to the unique planet we know today.
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?
Explained • 2018 • Environment