President Obama (from left), French President Francois Hollande and Microsoft co-founder Bill Gates applaud a speech during the Mission Innovation event at the UN conference on climate change Monday in Paris.
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A building called Sustainability Base, at NASA's Ames Research Center in Mountain View, Calif., has an energy-efficient design that allows in sunlight. So for most of the year, the interior is illuminated by natural light.
A flower is placed inside a bullet hole in the window of Le Carillon restaurant in tribute to the victims of the terror attacks on November 15 in Paris, France.
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