Tom Homan, President Trump’s chief border official, cast the operation largely as one to help ease long security lines. The Homeland Security Department said 14 airports across the country would be involved.

The continued burning of fossil fuels is locking heat in Earth’s atmosphere, oceans and land — instead of allowing it to reflect back into space, a new report finds.

Republicans have largely been on defense against Democratic criticism. Here are five arguments advanced by figures in both parties.

After speaking alongside city officials in Paterson, N.J., Leqaa Kordia, who was recently released after a year in ICE detention, led a crowd in chants of “globalize the intifada.”

President Trump’s hopes that an Israeli plan to ignite an internal uprising against Iran’s theocratic government could bring the war to a swift end have so far been dashed.

The actor, who died on Friday, was a fan favorite on “Buffy the Vampire Slayer,” even as his character mixed quiet heroism with hostility toward the show’s women.

In recent years, more homes have added air-conditioning, something that may come in handy this week as some areas are expected to see temperatures 40 degrees above normal.

Woodrow Wilson’s presidency has taken on new resonance among historians and critics of President Trump, particularly when it comes to race.

On Capitol Hill and in Nashville, comments by Representative Andy Ogles of Tennessee have sown division and underscored a growing tolerance on the right for Islamophobia.

After a seven-ton fireball exploded above the Cleveland area, a group of meteorite hunters descended too, in the name of science — and possibly cash.

He played the part of Xander Harris, one of Buffy’s closest friends, on the hit television show about a teenage girl who protects the world from monsters.