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Last endangered Mexican porpoises to be rounded up by US Navy-trained dolphins

US Navy-trained dolphins and their handlers will participate in a last-ditch effort to catch the last few dozen of Mexico’s vaquita porpoises to save them from extinction. The trained animals will use their sonar to locate the extremely elusive vaquitas, then surface and advise their handlers. The number of vaquitas, the world’s smallest and most endangered porpoise species, has been …

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87,000 NASA Images Show a Greening Arctic

Flowers carpet the tundra in Nunavut, the northernmost territory of Canada. Photo credit: DB Marsh/Library and Archives Canada via Flickr The researchers report in the Journal of Remote Sensing that examination of 87,000 images captured by the NASA Landsat satellite reveals that Alaska, Quebec and other regions became greener between 1984 and 2012. Landsat, a project also backed by the U.S. Geological Survey (USGS), provides the …