Top science and space stories of 2013

December 26, 2013 2:15 PM

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Posted on: 7:13 am, December 26, 2013, by CNN Wire, updated on: 07:14am, December 26, 2013

It has been a thrilling year of discovery in many areas of science, but also a sobering time — federal funding cuts threaten the future of innovation, and rising carbon dioxide levels foreshadow environmental and health challenges linked to climate change.

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