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If you have a hard time keeping track, heres what you should know about the change. When do the clocks change? The clocks are set to go forward on Sunday, March 26 at 1:00 am. Do we gain or lose an hour? We lose an hour, which means darker mornings and lighter evenings. One easy way to keep track is by remembering Spring forward, Fall back. What is the history of Daylight Saving Time and the clocks changing? The idea of changing the clocks in the UK came about 1907 as a way to make use of the daytime. The term "British Summer Time" (or Daylight Saving Time ) was coined by builder William Willet, who made an effort to get people out of bed earlier by changing the nation's clocks. Ironically, British Summer Time was officially established in 1916, less than a year after Willet's death.
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We've seen heat stress build since December." The agency said more bleaching was being observed in the central part of the reef, which last year escaped widespread severe bleaching. The 2016 bleaching was more severe in the northern areas of the bio-diverse site. The back-to-back occurrence of widespread bleaching also meant there was insufficient time for corals to fully recover, Neal Cantin from the Australian Institute of Marine Science said. "We are seeing a decrease in the stress tolerance of these corals," Cantin added in a statement. "This is the first time the Great Barrier Reef has not had a few years between bleaching events to recover. "Many coral species appear to be more susceptible to bleaching after more than 12 months of sustained above-average ocean temperatures." - 'Fight climate change' - Bleaching occurs when abnormal environmental conditions, such as warmer sea temperatures, cause corals to expel tiny photosynthetic algae, draining them of their colour. Corals can recover if the water temperature drops and the algae are able to recolonise them. But researchers said in January coral reefs which survive rapid bleaching fuelled by global warming would remain deeply damaged with little prospect of full recovery. The Barrier Reef -- already under pressure from farming run-off, development and the crown-of-thorns starfish -- escaped with minor damage after two other bleaching events in 1998 and 2002. Conservation group WWF-Australia said Friday the latest bleaching increased the urgency of tackling climate change in Australia, one of the world's worst per capita greenhouse gas polluters. "I did not anticipate back-to-back bleaching this decade," WWF-Australia's oceans division head Richard Leck said.