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Earth's Story The Deep The deep the other world, where the temperature hovers just above zero but is occasionally pierced by jets of water boiling at 300ºC , revolutionized the way scientists think about this planet and filled in many of the missing elements in the unfolding detective story of the Earth's history. At the heart of the tale is the mid-Atlantic ridge a vast chain of submarine volcanoes stretching the length of the Atlantic Ocean and then on through the rest of the world's oceans a continuous mountain chain running for 60,000 kilometres. https://www.youtube.com/watch?v=nIJUVp5EJBQ Earth's Story Journey to the Center Of the Earth What drives the tectonic plates as they glide over the Earth's surface? Scientists have probed our planet to its core. In this realm of unimaginably high temperatures and pressures, matter takes on new forms, and solid rock can behave like a fluid. As vast masses of rock flow slowly within the Earth, so the surface moves and changes. Gigantic plumes of hot material can well up from the depths, triggering huge volcanic eruptions and causing the crust to bulge and break. The result may be the splitting of a continent and the creation of a new ocean basin Earth's Story Time Travellers How old is the planet and what was it like when it first formed? Geologists have been striving to find the answer to this question for the last 200 years. Using computer graphics, travel back nearly four billion years, to re-create the landscape of that distant time, when the planet was covered with a single vast but shallow ocean, dotted with thousands of volcanic islands, and bombarded by meteorites. Astonishingly, life was already flourishing. The oldest-known object in existence may look like any old lump of rock but it is 4,566 million years old and may provide a vital clue to the age of the Earth. Host Aubrey Manning. Earth's Future Scientists are tracking the overall rate of ice loss with the Grace Satellite. They found that from 2003 to 2009, Greenland lost about a trillion tons, mostly along its coastlines. This number mirror's ice loss in the Arctic as a whole. By 2012, summer sea ice coverage had fallen to a little more than half of what it was in the year 1980. While the ice rebounded in 2013, the coverage was still well below the average of the last three decades. Analyzing global data from Grace, one study reports that Earth lost about 4,000 cubic kilometers of ice in the decade leading up to 2012. https://www.youtube.com/watch?v=8PeJ3pmHOYA

Quantum physics governs the universe on the tiniest of scales. Things over here can affect others over there, instantaneously and without anything crossing the space between them. A century ago, during the initial shots in the quantum revolution, the best minds of a generation Albert Einstein and Niels Bohr squared off in a battle of physics. How could the rules of the quantum world, which work so well to describe the behavior of individual atoms and their components, conflict so dramatically with the everyday rules that govern people, planets, and galaxies? Quantum mechanics may be counterintuitive, but it's one of the most successful theories in the history of science, making predictions that have been confirmed to better than one part in a billion, while also launching the technological advances at the heart of modern life, like computers and cell phones. But even today, even with such profound successes, the debate still rages over what quantum mechanics implies for the true nature of reality. https://www.youtube.com/watch?v=7iYrDE-5Dl0