Cut greenhouse gas emissions. Simple -- and terribly complicated. But we've done the inconceivable before, and we can again.
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In our busy lives, full of deadlines, drama and dreams, it's sometimes difficult to recognize the sheer vastness of the universe around us -- and our ...
You were a great man. Your work continues to inspire a whole new generation of thinkers. You are missed. Happy birthday, Dr. Carl Sagan.
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