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earth
Apr 9, 2013 — Did the seeds of life on Earth begin on Mars? Are we part of Earth's first alien invasion? Adam Frank says we may be looking at a future full of discoveries in our own solar system that could reset our understanding of life and its origin.
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Mar 10, 2013 — Not only is there no consensus yet on how life might have started on Earth, there is not even any agreement on where it started. But still, many think the mystery of life's origin can be solved. Commentator Wim Hordijk revels in the subject at a conference hosted by Princeton University.
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Feb 8, 2013 — We know a great deal about life and its pre-biotic precursors. But do we now understand how life is built from non-life? This is still an open question. Philospher Alva Noë considers this state of affairs in the context of the storm of controversy surrounding Thomas Nagel's book.
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Jan 15, 2013 — In a breathtaking video, astronauts talk of the Overview Effect: how their vision of the Earth — and our role in its future — changed once they saw it from space. It's high time we take their views seriously and act as a species to preserve our future.
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Oct 31, 2012 — NASA's Kepler Mission has been spotting many "Earth-like" planets within our galactic neighborhood. But what fraction of these Earth-like planets are really like our planet? The more we learn about Earth's remarkable properties, the rarer our planet seems to be. And with it, the life it hosts.
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Oct 9, 2012 — The vast web of geometries traced out in light shows you cities as a kind of infestation. They're like living networks spreading across the planet.
Sep 12, 2012 — Our lives are based on conventions that seem rock solid when they aren't, at least in comparison with cosmic time-scales. The duration of a day changes in time, determined by the gyrations of the Earth-Moon pair.
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Jun 5, 2012 — Less than 250 years ago, the brightest minds of the Enlightenment were stumped over how far the Earth is from the sun. The transits of the 1760s helped answer that question, providing a virtual yardstick for the universe.
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May 16, 2012 — The violent demise of the dinosaurs can teach us a lesson or two about our place in the big scheme of things. Are we the end product of cosmic cataclysms?
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Mar 21, 2012 — The sun's recent activity reminds us of of our cosmic fragility. How long do we have here until the "end"?
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