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BERLIN — The United States has formally left the Paris Agreement, a global pact forged five years ago to avert the threat of catastrophic climate change. The move was long threatened by U.S. President Donald Trump and triggered by his administration a year ago. It further isolates the United States in the world but has no immediate impact on international efforts to curb global warming. Some 189 countries remain committed to the 2015 accord, which aims to keep the increase in average temperatures worldwide “well below” 2 degrees Celsius compared to pre-industrial levels. Scientists say that any rise beyond 2 degrees Celsius could have a devastating impact on large parts of the world, raising sea levels, stoking tropical storms and worsening droughts and floods. 779

BETHESDA, Maryland — The Montgomery County Police press office said Tuesday afternoon that it received a call to assist for a report of an active shooter at Walter Reed National Military Medical Center.Around 3:15 p.m. Eastern, reports indicated it was a drill, not an actual active shooter situation.During the situation, Rep. Dutch Ruppersberger, D-Maryland, tweeted about it from inside the center."I am currently at Walter Reed Medical in Bethesda where we've been told there is an active shooter," Ruppersberger said. "I am currently safe in a conference room w/ approx 40 others."Two individuals separately told CNN they were inside the building at Walter Reed just before 3 p.m. Tuesday and were told to continue to shelter in place. One individual said loudspeakers announced that it was still an active situation. The other individual reported hearing lots of sirens. 884

Bill Gates is sorry that he made it so annoying to log in to your computer.The billionaire Microsoft co-founder admitted Wednesday that the Control-Alt-Delete function used to start up Windows computers is an awkward maneuver."If I could make one small edit, I'd make that a single key," Gates said Wednesday on a panel at the Bloomberg Global Business Forum in New York City. 384

BERLIN (AP) — Holocaust survivors are lending their voices to a campaign targeting Facebook head Mark Zuckerberg, urging him to take action to remove denial of the Nazi genocide from the social media site. Coordinated by the New York-based Conference on Jewish Material Claims Against Germany, the #NoDenyingIt campaign launched Wednesday uses Facebook itself to make the survivors’ entreaties to Zuckerberg heard with one video per day being posted urging him to remove Holocaust denying groups, pages and posts as hate speech. Facebook says it already takes down Holocaust denial posts in countries where it is illegal and elsewhere removes “any post that celebrates, defends, or attempts to justify the Holocaust.” 725

BIRMINGHAM, Ala. (AP) — An Alabama man says he has completed his quest to mow lawns for veterans in all 50 states.Rodney Smith Jr. tweeted Friday that he's headed home from Hawaii after cutting grass in Oahu. He got to his last state with help from Delta Air Lines.He says he will now continue providing free lawn care to the elderly, disabled, single mothers and veterans in Alabama. 392

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