Image: Third Bosphorus Bridge progress

These 17 images from the Sentinel-2A satellite show a year of progress on the Third Bosphorus Bridge in Istanbul, Turkey.

Mirrors blamed for fire at world's largest solar plant

A small fire shut down a generating tower Thursday at the world's largest solar power plant, leaving the sprawling facility on the California-Nevada border operating at only a third of its capacity, authorities said.

From Sydney to New York, landmarks go dark for Earth Hour

From Sydney's Opera House to New York's Empire State Building and Paris's Eiffel tower, landmarks worldwide dimmed their lights Saturday for the 10th edition of the Earth Hour campaign against climate change.

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