Environment
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In this Friday, March 21, 2014 photo, an exhibitor displays a Biochar, a charcoal-like product made from human waste, used as cooking fuel or fertilizer, at the Reinvent The Toilet Fair in New Delhi, India. Scientists who accepted the Bill & Melinda Gates Foundation’s challenge to reinvent the toilet showcased their inventions in the Indian capital Saturday. The primary goal: to sanitize waste, use minimal water or electricity, and produce a usable product at low cost. India is by far the worst culprit, with more than 640 million people defecating in the open and producing a stunning 72,000 tons of human waste each day - the equivalent weight of almost 10 Eiffel Towers or 1,800 humpback whales. (AP Photo/Tsering Topgyal)
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In this Friday, March 21, 2014 photo, an exhibitor demonstrates the use of a toilet tap where water is recycled and reused, during Reinvent The Toilet Fair in New Delhi, India. Scientists who accepted the Bill & Melinda Gates Foundation’s challenge to reinvent the toilet showcased their inventions in the Indian capital Saturday. The primary goal: to sanitize waste, use minimal water or electricity, and produce a usable product at low cost. India is by far the worst culprit, with more than 640 million people defecating in the open and producing a stunning 72,000 tons of human waste each day - the equivalent weight of almost 10 Eiffel Towers or 1,800 humpback whales. (AP Photo/Tsering Topgyal)
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Japanese Air Self-Defense Force loadmasters and trained spotters scan the ocean aboard a C130 aircraft while it flies over the southern search area in the southeastern Indian Ocean, 200 to 300 kilometers (124 to 186 miles) south of Sumatra, Indonesia, Friday, March 21, 2014. Search planes scoured a remote patch of the Indian Ocean but came back empty-handed Friday after looking for any sign of the missing Malaysia Airlines jet, another disappointing day in one of the world's biggest aviation mysteries. (AP Photo/Koji Ueda)
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Japanese Air Self-Defense Force's Capt. Junichi Tanoue, left, co-pilot Ryutaro Hamahira, second from left, and engineer Noriyuki Yamanouchi, second from right, scan the ocean aboard a C130 aircraft while it flies over the southern search area in the southeastern Indian Ocean, 200 to 300 kilometers (124 to 186 miles) south of Sumatra, Indonesia, Friday, March 21, 2014. Search planes scoured a remote patch of the Indian Ocean but came back empty-handed Friday after looking for any sign of the missing Malaysia Airlines jet, another disappointing day in one of the world's biggest aviation mysteries. (AP Photo/Koji Ueda)
