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Researchers at the University at Buffalo say they've developed a low-cost new technology that can identify whether drugs are present. They believe the chemical-sensing chip could someday test someone or something for cocaine, marijuana or opioids just as quickly and cheaply as a breathalyzer tests for alcohol. 324

President Donald Trump traveled again Tuesday to Walter Reed National Military Medical Center outside Washington, where his wife, Melania, is convalescing after a kidney procedure.The first lady underwent the procedure on Monday, and her office said she would likely remain in the hospital for the rest of the week. Trump wasn't at the facility during the procedure but flew there aboard his Marine One helicopter later Monday afternoon.He flew there again on Tuesday, arriving just past 4 p.m. and remained for roughly 80 minutes. Earlier, he began remarks on Capitol Hill by thanking the "incredible" doctors at Walter Reed for his wife's care. 654

President Donald Trump voted in the 2020 general election early and in-person in his home state of Florida on Saturday.Trump voted early at a precinct in West Palm Beach, Florida, near his Mar-a-Lago estate and club."JUST VOTED. A great honor!" Trump tweeted mid-morning on Saturday.A lifelong New Yorker, Trump changed his registration in 2019 and declared himself a resident of Florida.Trump narrowly won Florida in the 2016 election, beating Hillary Clinton by just over 100,000 votes. Florida could prove essential to the President's re-election chances in 2020, but recent polls show Trump trailing slightly behind Democratic presidential nominee Joe Biden in the Sunshine State with just 10 left until election day. 729

Public health experts say there is little evidence that the protests that erupted after George Floyd’s death caused a significant increase in coronavirus infections. If the protests had driven an explosion in cases, experts say, the jumps would have started to become apparent within two weeks — and perhaps as early as five days. But that didn’t happen in many cities with the largest protests. The Associated Press reviewed trends in daily reported cases in 22 U.S. cities with protests. It found post-protest increases in several cities, but experts say other factors were more likely the main drivers. 613

PROVIDENCE, R.I. (AP) -- The suspect in a fatal stabbing in Rhode Island last month was apprehended apparently trying to cross from California into Mexico.U. S. Border Patrol says 35-year-old Michael Domenech approached the checkpoint on Interstate 8 near Pine Valley, in a car at about 2 a.m. Saturday.When agents approached the driver, he drove away from the checkpoint. Authorities say agents used a tire deflation device to deflate one of the car's tires.The pursuit continued for 20 minutes until Domenech was taken into custody.Domenech is wanted in connection with the fatal stabbing of Cory Vargas in Providence on Sept. 24. 640