Air pollution

Environmental activist Greta Thunberg, of Sweden, addresses the Climate Action Summit in the United Nations General Assembly, at U.N. headquarters, Monday, Sept. 23, 2019. (AP Photo/Jason DeCrow)
September 23, 2019 - 3:39 pm
UNITED NATIONS (AP) — Scolded for doing little, leader after leader promised the United Nations on Monday to do more to prevent a warming world from reaching even more dangerous levels. As they made their pledges at the Climate Action Summit, though, they and others conceded it was not enough. And...
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FILE - In this Sept. 13, 2014, file photo, California Gov. Jerry Brown, front right, and China's National Development and Reform Commission Vice Chairman Xie Zhenhua, front left, sign an agreement to boost bilateral cooperation on climate change during a news conference at the Bay Area Council, in San Francisco. As tensions between China and the United States ratchet up, former California Gov. Jerry Brown sees a way to bring together the world's largest carbon emitter and a U.S. state that's leading the way in energy standards: climate change. (AP Photo/Beck Diefenbach,file)
September 23, 2019 - 2:32 pm
SACRAMENTO, Calif. (AP) — As tensions between China and the United States ratchet up, former California Gov. Jerry Brown sees a way to bring together the world's largest carbon emitter and a U.S. state that's leading the way in energy standards: climate change. Brown and Xie Zhenhua, China's top...
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FILE - Jan. 13, 2018 file photo, U.N. Secretary-General Antonio Guterres talks to the media during a join declaration with the Colombian president, in Bogota, Colombia. Saying humanity is waging war with the planet, the head of the United Nations isn’t planning to let just any world leader speak about climate change in Monday’s special “action summit.” Guterres says only those with new specific and bold plans can command the podium and the ever-warming world’s attention. (AP Photo/Fernando Vergara, File)
September 22, 2019 - 12:51 pm
UNITED NATIONS (AP) — Saying humanity is waging war with the planet, the head of the United Nations isn't planning to let just any world leader speak about climate change at Monday's special "action summit." Only those with new, specific and bold plans can command the podium and the ever-warming...
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FILE - In this Sept. 18, 2019 file photo California Attorney General Xavier Becerra, right, flanked by Gov. Gavin Newsom, discusses the Trump administration's pledge to revoke California's authority to set vehicle emissions standards that are different than the federal standards, during a news conference in Sacramento, Calif. Twenty-three states have sued to stop the Trump administration from revoking California's authority to set emission standards for cars and trucks. Becerra is leading the lawsuit filed Friday, Sept. 20 along with Newsom and the California Air Resources Board. (AP Photo/Rich Pedroncelli,File)
Associated Press
September 20, 2019 - 2:28 pm
SACRAMENTO, Calif. (AP) — California sued Friday to stop the Trump administration from revoking its authority to set greenhouse gas emission and fuel economy standards for cars and trucks, enlisting help from 22 other states in a battle that will shape a key component of the nation's climate policy...
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Climate change activists participate in an environmental demonstration as part of a global youth-led day of action, Friday Sept. 20, 2019, in New York. A wave of climate change protests swept across the globe Friday, with hundreds of thousands of young people sending a message to leaders headed for a U.N. summit: The warming world can't wait for action. (AP Photo/Bebeto Matthews)
September 20, 2019 - 1:50 pm
NEW YORK (AP) — The Latest on the global climate protests being held in cities around the world (all times local): 3:45 p.m. Hundreds of mainly young demonstrators are marching through downtown Mexico City, chanting "political change, not climate change!" That was an apparent reference to President...
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Swedish environmental activist Greta Thunberg, center, takes part during the Climate Strike, Friday, Sept. 20, 2019 in New York.  Rallies calling for action on climate change are happening in cities around the world Friday ahead of a summit on the issue.  (AP Photo/Eduardo Munoz Alvarez)
Associated Press
September 20, 2019 - 10:39 am
NEW YORK (AP) — A wave of climate change protests swept across the globe Friday, with hundreds of thousands of young people sending a message to leaders headed for a U.N. summit: The warming world can't wait for action. Marches, rallies and demonstrations were held from Canberra to Kabul and Cape...
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President Donald Trump boards Air Force One at Marine Corps Air Station Miramar, Wednesday, Sept. 18, 2019, in San Diego, Calif. (AP Photo/Evan Vucci)
September 18, 2019 - 7:41 pm
SAN DIEGO (AP) — President Donald Trump remains on a war footing. With California. Trump's primary mission during his two-day visit to the state was to raise millions from wealthy Republicans. But he also made a point of deriding the state's handling of its homeless crisis, and on Wednesday, he...
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The headquarters of the Environmental Protection Agency is seen in Washington as President Donald Trump announces that his administration is revoking California's authority to set auto mileage standards stricter than those issued by federal regulators, Wednesday, Sept. 18, 2019. Critics say the move would result in less fuel efficient cars that create more planet-warming pollution. (AP Photo/J. Scott Applewhite)
Associated Press
September 18, 2019 - 3:37 pm
WASHINGTON (AP) — President Donald Trump announced Wednesday that his administration is revoking California's authority to set auto mileage standards stricter than those issued by federal regulators, a move critics said would result in less fuel-efficient cars that create more planet-warming...
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President Donald Trump arrives at Moffett Federal Airfield to attend a fundraiser, Tuesday, Sept. 17, 2019, in Mountain View, Calif. (AP Photo/Evan Vucci)
September 18, 2019 - 8:39 am
WASHINGTON (AP) — The Latest on President Donald Trump and California's fuel emissions standards (all times local): 11:30 a.m. President Donald Trump says his administration is revoking California's authority to set auto mileage standards stricter than those issued by federal regulators. In a tweet...
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This Feb. 14, 2019, photo released by Caltrans District 3 shows a 7-mile back up on the South bound Interstate 5, as it reopens to traffic in Maxwell in Colusa County, Calif. The Trump administration is poised revoke California’s authority to set auto mileage standards, asserting that only the federal government has the power to regulate greenhouse gas emissions and fuel economy. (Caltrans District 3 via AP)
Associated Press
September 17, 2019 - 3:01 pm
WASHINGTON (AP) — The Trump administration is poised to revoke California's authority to set auto mileage standards, asserting that only the federal government has the power to regulate greenhouse gas emissions and fuel economy. Conservative and free-market groups have been asked to attend a formal...
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