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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.
Venus and Mars show how inhospitable Earth could have been if things were just a little bit different.
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Mathematicians Dr. Hannah Fry, Prof. Norman Fenton and Prof. David Spiegelhalter reveal the three numbers that tell the story about the past, present and future of the earth's climate.
1/2 • Climate Change by the Numbers • 2016 • Environment
How can global warming of less than 1 degree Celsius drive extreme weather? You might need to look beneath the surface (of the ocean) for the answer.
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It's amazing to think that in the 1900s a mere tenth of the world's population lived and worked in cities. Now it is over half. With soaring populations, how will we keep our cities live-able? And what will the city of tomorrow look like?
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