徐州几个月的时候做四维彩超(徐州刚怀孕几天的征兆) (今日更新中)

WASHINGTON (AP) — The Trump administration says people would drive more and be exposed to increased risk if their cars get better gas mileage, an argument intended to justify freezing Obama-era toughening of fuel standards.Transportation experts dispute the arguments, contained in a draft of the administration's proposals prepared this summer, excerpts of which were obtained by The Associated Press.The excerpts also show the administration plans to challenge California's long-standing authority to enact its own, tougher pollution and fuel standards.Revisions to the mileage requirements for 2021 through 2026 are still being worked on, the administration says, and changes could be made before the proposal is released as soon as this week.RELATED: California sues over plan to scrap car emission standardsThe Trump administration gave notice earlier this year that it would roll back tough new fuel standards put into place in the waning days of the Obama administration. Anticipating the new regulation, California and 16 other states sued the Trump administration in May.Overall, "improvements over time have better longer-term effects simply by not alienating consumers, as compared to great leaps forward" in fuel efficiency and other technology, the administration argues. It contends that freezing the mileage requirements at 2020 levels would save up to 1,000 lives per year.New vehicles would be cheaper — and heavier — if they don't have to meet more stringent fuel requirements and more people would buy them, the draft says, and that would put more drivers in safer, newer vehicles that pollute less.RELATED: EPA moves to weaken Obama-era fuel efficiency standardsAt the same time, the draft says that people will drive less if their vehicles get fewer miles per gallon, lowering the risk of crashes.David Zuby, chief research officer at the Insurance Institute for Highway Safety, said he's doubtful about the administration's estimate of lives saved because other factors could affect traffic deaths, such as automakers agreeing to make automatic emergency braking standard on all models before 2022. "They're making assumptions about stuff that may or may not be the same," he said.Experts say the logic that heavier vehicles are safer doesn't hold up because lighter, newer vehicles perform as well or better than older, heavier versions in crash tests, and because the weight difference between the Obama and Trump requirements would be minimal.RELATED: President Trump, California clash over key issues"Allow me to be skeptical," said Giorgio Rizzoni, an engineering professor and director of the Center for Automotive Research at Ohio State University. "To say that safety is a direct result of somehow freezing the fuel economy mandate for a few years, I think that's a stretch."Experts say that a heavier, bigger vehicle would incur less damage in a crash with a smaller, lighter one and that fatality rates also are higher for smaller vehicles. But they also say that lighter vehicles with metals such as aluminum, magnesium, titanium and lighter, high-strength steel alloys perform as well or better than their predecessors in crash tests.Alan Taub, professor of materials science and engineering at the University of Michigan, said he would choose a 2017 Malibu over a heavier one from 20 years earlier. It's engineered better, has more features to avoid crashes and additional air bags, among other things. "You want to be in the newer vehicle," he said.RELATED: Nearly every governor with ocean coastline opposes Trump's drilling proposalAn April draft from the Trump administration said freezing the requirements at 2020 levels would save people ,900 per new vehicle. But the later draft raises that to ,100 and even as high as ,700 by 2025.Environmental groups questioned the justification for freezing the standards. Luke Tonachel, director of the clean-vehicle program at the Natural Resources Defense Council, said the risk from people driving more due to higher mileage is "tiny and maybe even negligible."Under the Trump administration proposal, the fleet of new vehicles would have to average roughly 30 mpg in real-world driving, and that wouldn't change through 2026.California has had the authority under the half-century-old Clean Air Act to set its own mileage under a special rule allowing the state to curb its chronic smog problem. More than a dozen states follow California's standards, amounting to about 40 percent of the country's new-vehicle market.Asked if he thinks a freeze in U.S. mileage standards is warranted, EPA acting administrator Andrew Wheeler told a small group of reporters at EPA headquarters last week, "I think we need to go where the technology takes us" on fuel standards.Wheeler did not elaborate. Agency spokespeople did not respond when asked specifically if the EPA acting chief was making the case that modern cars could be both fuel efficient and safe.Wheeler also spoke out for what he called "a 50-state solution" that would keep the U.S car and truck market from splitting between two different mileage standards.The Department of Transportation said in a statement that the final fuel economy standards would be based on sound science. The department cautioned that a draft doesn't capture the whole picture of the proposed regulation.The draft said a 2012 analysis of fuel economy standards under the Obama administration deliberately limited the amount of mass reduction necessary under the standards. This was done "in order to avoid the appearance of adverse safety effects," the draft stated.___Krisher reported from Detroit. 5642

WASHINGTON, D.C. — U.S. officials estimate that 20 million Americans have been infected with the coronavirus since it first arrived in the United States, with millions never knowing they had it.Thursday's estimate is roughly 10 times the 2.3 million cases that have been confirmed in the U.S.“Our best estimate right now is that for every case that we’ve reported, there were actually 10 other infections,” said the director of the Centers for Disease Control and Prevention (CDC), Robert Redfield, during a phone briefing with reporters Thursday. Redfield said that estimate comes from analyzing blood samples from across the country for the presence of antibodies to the virus.Twenty million infections means that only about 6% of the nation’s 331 million people have had the virus, leaving the vast majority of the population still susceptible.“This is still serious,” Redfield said. “But I’m asking people to recognize that we’re in a different situation today than we were in March or April,” with more cases today in younger people who are not as likely to develop serious illness or die from infection, he said.The news comes as the Trump administration works to tamp down nationwide concern about the COVID-19 pandemic at a time when about a dozen states are seeing worrisome increases in cases.Also on Thursday, the CDC announced that it was broadening its list of people who are at a higher risk of getting seriously ill from the coronavirus. The CDC has removed the specific age threshold for severe COVID-19 illness. It now warns that among adults, risk increases steadily as you age, and it’s not just those over the age of 65 who are at increased risk.The agency has also updated its list of underlying medical conditions that increase the risk of severe illness from the coronavirus. 1806

Were you able to take your planned summer vacation in 2020? If so, consider yourself lucky.According to a survey commissioned by Lending Tree and conducted by Value Penguin, 72% of Americans did not take a summer vacation this summer. Of those that did, 71% opted to travel by car instead of plane.With most Americans not traveling in 2020, the use of paid time off from work also declined. The survey found that 44% of Americans did not use any paid time off this summer, with an additional 22% saying they took less time off than usual.The survey found that men along with younger and middle-aged Americans were more likely to travel. Just 13% of baby boomers and 9% of silent generation members traveled this summer.“Women tend to be more cautious than men in many ways, so I’m not surprised they might be more reluctant to go on vacation,” said Matt Schulz, chief credit analyst at LendingTreeFor some Americans, nearly 20%, the summer was considered not too different than other summers.Finances also seemingly played a role in who traveled, as 52% of households earning over 0,000 a year traveled this summer compared to just 15% of households making less than ,000 a year.To read the full study, click here. 1228

WASHINGTON, D.C. — The seven-day rolling average for daily new coronavirus cases in the U.S. rose over the past two weeks from 52,350 to more than 74,180.That’s according to data through Wednesday from Johns Hopkins University, marking a return to levels not seen since the summer surge.The rolling average for daily new deaths rose over the past two weeks from 724 to 787.Positive test rates have been rising in 45 states, according to the COVID Tracking Project. Fifteen states have positive test rates of 10% or higher, considered an indicator of widespread transmission.Health and Human Services Assistant Secretary Adm. Brett Giroir said earlier this week the proof of the uptick is the rising numbers of hospitalizations and deaths.The U.S. leads the world with 8.9 million confirmed coronavirus cases and more than 228,000 deaths since the start of the pandemic. 877

WASHINGTON (AP) — The Democratic-controlled House has approved a bill that would make the District of Columbia the 51st state, but the legislation faces strong opposition from Republicans.The House vote was prompted by the White House's move to use federal forces to clear peaceful protesters so President Donald Trump could walk to a nearby church for a photo op earlier this month.D.C. statehood is an issue that advocates say has become far more important in the aftermath of protests for racial justice in both Washington and across the nation.Democratic lawmakers say Congress has both the moral obligation and constitutional authority to ensure that the city’s 700,000 residents are allowed full voting rights, no longer subject to "taxation without representation."Del. Eleanor Holmes Norton, the district’s non-voting representative in Congress, sponsored the bill, saying it has both the facts and Constitution on its side.D.C.'s population is larger than those of Wyoming and Vermont, and its budget is larger than 12 states.Action on the bill in the GOP-controlled Senate is unlikely.If the measure was signed into law, the state of “Washington, Douglass Commonwealth” would be admitted into the U.S. and the new state would elect two U.S. senators and one U.S. representative. The seats would likely go to the Democrats, due to the community’s largely liberal population.The state would consist of all D.C. territory except federal buildings and monuments, including the principal federal monuments, the White House, the Capitol Building, the U.S. Supreme Court Building, and the federal executive, legislative, and judicial office buildings located adjacent to the Mall and the Capitol Building. 1716

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