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Is the cost of fighting climate change low? US, EU and UN say yes in leaked handbook
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'Monster tsunami' evidence uncovered in Hawaii is a bad omen
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Ancient Europeans suffered from lactose intolerance for 5000 years
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Northern white rhinos on brink of extinction: After recent death, only six left
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Orionids meteor shower expected on Tuesday morning (courtesy Halley's Comet): Here's how and when you can watch it
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How to watch partial solar eclipse on Oct. 23
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Scientist finds puppy-sized spider with 2-inches long fangs: Stuff that nightmares are made of?
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NASA Mars Odyssey orbiter watches Siding Spring comet zip past at a hair's breadth
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Crystallizing DNA: Scientists make first large DNA crystals for nanotechnology
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This spider is as big as a puppy, but nowhere near as cute
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Leonardo DiCaprio donates $2 million to protect oceans and marine life
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Partial solar eclipse this week: Keep your eyes peeled if you live in North America
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