Opinion | Enough About Climate Change. Air Pollution Is Killing Us Now.
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Opinion | Enough About Climate Change. Air Pollution Is Killing Us Now.

In the early weeks of the coronavirus pandemic in 2020, doctors noticed a surprising silver lining: Americans were having fewer heart attacks. One likely reason, according to an analysis published last month by researchers at the University of California, San Francisco, is that people were inhaling less air pollution. Millions…

Will You Keep Wearing a Mask on Planes and Public Transit?
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Will You Keep Wearing a Mask on Planes and Public Transit?

On Monday, a federal judge struck down a nationwide mask mandate on airplanes, trains, buses and other public transportation. The ruling left it up to individual airlines and local transit agencies to decide what to do. By late Monday, the nation’s largest airlines had dropped their mask requirements for domestic…

Huge Steel Plant in Mariupol Is a Fortress for Ukrainian Holdouts
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Huge Steel Plant in Mariupol Is a Fortress for Ukrainian Holdouts

A sprawling Soviet-era steel factory that is sheltering thousands of soldiers and civilians is the last Ukrainian redoubt in the ravaged city of Mariupol, where the battle by Russian forces to take full control of the city appears to be entering its final stages. Russian commanders said Tuesday they were…

The U.S. Races to Arm Ukraine With Heavier, More Advanced Weaponry
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The U.S. Races to Arm Ukraine With Heavier, More Advanced Weaponry

BRUSSELS — The race is on. As columns of Russian troops began pouring into Ukraine nearly two months ago, the United States and its allies started supplying Kyiv with weapons for what many expected to be a short war: sniper rifles, helmets, medical kits, encrypted communications, lots of bullets and…