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New research by the Atacama Cosmology Telescope (ACT) collaboration has produced the clearest images yet of the universe's infancy—the earliest cosmic time yet accessible to humans. Measuring ...

“Instead, these ordinary citizens became frontline soldiers—such as a veterinarian swapping a stethoscope for a sniper’s rifle, a game developer exchanging storyboards for FPV drone ...

The subjects looked at different images while receiving a series of electric shocks – some more painful than others – on the back of their left hand. The first scene depicted a lake surrounded by ...

The number of people waiting a long time to see specialists such as neurologists and cardiologists is disheartening. Experts reveal what's going on.

New York Times photographers covered Covid-19 throughout the world. These pictures, and the moments behind them, stayed with them. New York Times photographers covered Covid-19 throughout the world.