An aerial view of Kaskawulsh Glacier in Kluane National Park, Yukon, Canada. The UNESCO World Heritage site is undergoing rapid changes attributable to an altered climate. DEA/F. Barbagallo/De Agostini/Getty Images If you need any further evidence of climate change's drastic impact upon the planet, consider this. Up in northern Canada, the massive Kaskawulsh Glacier is receding so rapidly that in May 2016, the water melting from it changed direction. Instead of flowing into the Slims River and then north to the Bering Sea, the water now is being captured by the Kaskawulsh River and flowing south toward the Gulf of Alaska. That sort of shift is known to scientists as "river piracy" and "stream capture," and this is the first documented case of it in recorded history, according to the Washington Post. A Sept. 2, 2016 aerial photo shows the meltwater stream along the toe of Kaskawulsh Glacier, seen on the left, that is diverting fresh water from one river to the other. Dan … [Read more...] about Climate Change Reverses a River’s Flow in Canadian Glacier
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A French police intervention unit takes position outside a Paris apartment while a drone flies outside windows. Thomas Samson/Getty Images Technology and law enforcement have always been uneasy friends. As a society, we generally want our cops to have all of the tools they need to keep the bad guys at bay. We just want them to use those tools responsibly and without sticking their beaks into ordinary, generally law-abiding citizens' everyday life. Whether it's using infrared heat sensors to detect marijuana grow houses, global positioning system (GPS) tracking devices to tail suspects or breathalyzers to calculate how much a driver has had to drink, advances in technology usually mean new ways to make cops more effective. In the U.S., they also raise fresh questions about where police work stops and invasion of privacy begins. Drones are the latest new toy for cops to pose the policing versus privacy issue. Unmanned aerial vehicles (UAVs) offer law enforcement agencies a bird's … [Read more...] about How can police use drones?