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Experiments show that the animals change their communications depending on how much their audience knows.

He politicizes everything he touches, so unless his appointees act with utmost integrity they will be tainted as his henchmen.

Mr. Trump has brought on himself this examination of his authority to order the launch of the world’s most deadly weapons.

Bob Corker, the Republican chairman of the Senate Foreign Relations Committee, and Mark Warner, the highest ranking Democrat on the Senate Intelligence Committee, assess the dissolution of compromise in politics at a TimesTalks event.

The catastrophe of the storm has been followed by an economic disaster with no end in sight.

Hermes Rosa Jr. dropped out of high school and fell into a depression, abandoning his writing. Now, he’s going to college and performing his poems on YouTube.

A change in course has made the Office of the Comptroller of the Currency, which oversees the nation’s biggest banks, part of a campaign to roll back regulations.

The plan improves circulation and opens up underused spaces, while also announcing a study on the hotly contested issue of the library’s stacks.

The possibility appeared more likely after the Congressional Budget Office warned that the tax bill could set off a rule that would make cuts to Medicare over the next decade.

The final album by the soul singer, who died in 2016, had every bit of her energy and spirit.

The largest hospital in the earthquake zone nearly collapsed. Iran’s president wants to investigate.

A branch of the Second Avenue Deli is opening an upstairs bar where you can raise a toast (using a Dr. Brown’s) to Jewish culture.

The measure is said to be a response to a U.S. requirement imposed on the state-owned RT television network, but it is far broader in scope.

Delivering a summation of his foreign policy, President Trump interrupted himself — setting off hilarity on Twitter — by stopping for a swig of water.

The death toll could have been much worse had an elementary school not ordered a lockdown, the authorities said.

Here’s what you need to know to start your day.

A cranberry-lemon stripe cake, a devil’s-food cake with toasted-marshmallow frosting or a sugarplum gingerbread cake for your next special occasion.

The Roy Moore race tests the limits of what might be the most Republican state in the country.

Facing a lover’s death and a society’s intolerance, in a film by Sebastián Lelio.

We discovered we shared a common language, and a way of being in the world.