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Climate change protesters block off 5 London bridges

Hundreds of protesters have turned out in central London and blocked off the capital’s main bridges to demand the government take climate change seriously. A group called “Extinction Rebellion” encouraged sit-ins on the bridges Saturday as part of a coordinated week of action across the country. Metropolitan Police said emergency vehicles were hampered from getting […]

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The Latest: Landmark change to kilogram approved

The Latest on a scientific meeting on how to define weights and measures (all times local): 1:35 p.m. The international system of measurements has been overhauled with new definitions for the kilogram and other key units. At a meeting in Versailles, France, countries have voted to approve the wide-ranging changes that underpin vital human activities […]

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Rare conservation win: Mountain gorilla population ticks up

There are more gorillas in the mist — a rare conservation success story, scientists say. After facing near-extinction, mountain gorillas are slowly rebounding. On Wednesday, the Switzerland-based International Union for Conservation of Nature updated mountain gorillas’ status from “critically endangered” to “endangered,” a more promising, if still precarious, designation. There are now just over 1,000 […]