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"the CEO of Mars One, Bas Lansdorp, launches a search for volunteers to spend the rest of their lives on Mars"
"Thousands apply to become one of four astronauts selected to set up a human colony in a plan that comes with snags"
"The European Space Agency warns that space debris must be removed to prevent potentially catastrophic collisions with operational spacecrafts and satellites."
"Despite the clean technology of the past decade, we continue to extract and burn fossil fuels more than ever before"
"The evidence comes from a 364-metre ice core containing a record of freezing and melting over the previous millennium"
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