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Prenatal exposure to ambient air pollution was associated with an increased risk of autism spectrum disorder, a new study finds. Pregnant women in Vancouver who were exposed to the highest level of environmental nitric oxide, an airborne, traffic-related pollutant, were more likely to give birth to children later diagnosed with autism, the researchers say.Autism spectrum disorder, a developmental disability, is characterized by problems with communication and social interaction with accompanying repetitive behavior patterns.Lief Pagalan, lead author of the study and a member of the faculty of health sciences at Simon Fraser University, cautions that the study, published Monday in the medical journal JAMA Pediatrics, showed only an association between prenatal exposure to nitric oxide and autism rates. It did not prove that air pollution caused autism.Experts emphasize that the exact causes of autism remain unknown, and some say the researchers in this study did not analyze every potential risk factor.Still, the research "adds to the growing concern that there may be no safe levels of exposure to air pollution," Pagalan wrote in an email."Not only did we have access to rich data, enabling us to develop one of the largest studies to date, but we were also able to conduct this study in a city with relatively lower levels of air pollution," he said. 1375

President Donald Trump had lunch with National Rifle Association leaders Wayne LaPierre and Chris Cox over the weekend, he said Monday.The news was announced by the President during a meeting with governors at the White House Monday morning. The White House did not previously announce the meeting or provide a readout.Cox is the executive director of the NRA's lobbying arm, the NRA Institute for Legislative Action. LaPierre is the NRA's CEO.  458

POWAY, Calif. (KGTV) - Law enforcement presence was increased at Poway High School Tuesday after the school was threatened via email.Sheriff deputies said a staff member received an email that one or more explosive devices were concealed on campus. Deputies and Harbor Police K-9 units searched the campus but did not find any devices. 343

President Donald Trump has been eyeing potential replacements for several senior positions in his administration -- both inside the West Wing and across the Cabinet, multiple officials familiar with the matter said.With the exception of his family working inside the White House, few aides feel completely secure as he considers a major shakeup, the officials said.Kirstjen Nielsen, his secretary of the Department of Homeland Security, is potentially the next to go, multiple officials with knowledge of the matter said. Her departure could portend another high-profile exit: chief of staff John Kelly, Nielsen's top advocate in the administration.Trump could ask Nielsen to resign in the coming days, multiple officials familiar with the matter predicted, describing the President's continued frustration at her handling of his signature issue: immigration and border security.Meanwhile, Kelly is also on the list of possible resignations, despite Trump saying earlier this year he is welcome to stay in the post until the end of the President's term. Trump has been discussing a handful of replacements, including Nick Ayers, Vice President Mike Pence's chief of staff. The President had a long conversation with him on midterm election night last week, and has grown to like him, two officials said, but they cautioned it is far from certain whether Trump will dismiss Kelly and elevate Ayers.Ayers is not traveling with the vice president in Asia this week.In recent weeks, the President has resumed polling advisers on potential replacements, as he did several months ago before ultimately announcing that Kelly would remain on as his chief of staff through his 2020 re-election campaign.Ayers has told at least two friends he is in the running for the position, but it's unclear whether he knows his true standing in the volatile West Wing. He has grown close to the President and key members of the administration, including the President's daughter, Ivanka Trump, and son-in-law, Jared Kushner, and is valued for his political acumen -- something Trump allies have long grumbled that Kelly lacks.One Republican close to the White House questioned how serious Ayers was under consideration. Other top aides, such as adviser Johnny DeStefano and budget director Mick Mulvaney, are also being discussed -- as well as others outside the administration.DeStefano has presided over a growing portfolio inside a White House known for its complicated internal dynamics. He started out overseeing of the Office of Presidential Personnel, and has since been placed in charge of the political shop and the Office of Public Liaison.A source close to Mulvaney said he is no longer interested in the chief of staff position. He is now far more interested in a Cabinet position as a next move, the source said.Some Trump allies are urging the President to bring someone in from the outside, but it's an open question how attractive the position would be. 2956

President Donald Trump issued a statement declaring victory in Tuesday's presidential election, adding that he believes that the election is being stolen.There is no evidence at this time of any widespread election or voting fraud.When Trump spoke from the White House early Wednesday morning, opponent Joe Biden held a narrow 225-214 Electoral College lead. "I want to thank the American people for their tremendous support. Millions and millions of people voted for us today. And a very sad group of people is trying to disenfranchise that group of people. And we won't stand for it. We won't stand for it," Trump said.A number of battleground states remain uncalled, including Pennsylvania, Wisconsin and Michigan, North Carolina. With an influx of mail-in voting, states are needing more time than usual to count ballots. Officials in Pennsylvania have said that the vote count there could take days. The winner of Pennsylvania could be what decides the winner of the election.“We are up BIG, but they are trying to STEAL the Election. We will never let them do it. Votes cannot be cast after the Polls are closed!” Trump tweeted.Immediately after the message was sent, Twitter flagged the tweet for misinformation.In response, Biden campaign manager Jen O'Malley Dillon called Trump's comments "outrageous, unprecedented and incorrect.""It was outrageous because it is a naked effort to take away the democratic rights of American citizens," she wrote. 1465