Science

“Everything we perceive is inconsistent with the physical reality of the world,” Dr. Purves said. “Everything we see, whether it’s line length, color, brightness, you name it.”So, you are not really being...

Visionaries is a limited series that looks at figures who are trying to transform the way we live.Ravindra Gupta had studied drug-resistant H.I.V. for more than a decade when he first encountered...

WELLINGTON, New Zealand — The volunteer clambered down the cliffs, progressing along a series of knots on a thin rope as he made his perilous way about 100 feet down a steep...

On the January evening when the superintendent introduced staff from Generations Family Health Center, the nonprofit health care group that was to provide services in the school, the visitors peered out of...

Decades after her grandfather’s death from cancer in 1939, Professor Freud considered many of his fundamental theories, from “penis envy” to transference, to be outdated — “brilliant as well as questionable,” as...

The amount of planet-warming carbon dioxide in the atmosphere broke a record in May, continuing its relentless climb, scientists said Friday. It is now 50 percent higher than the preindustrial average, before...

Head-butting is an ancient and widespread form of conflict resolution. Dinosaurs like Pachycephalosaurus had sturdy skulls, and knocking heads remains common in bighorn sheep, chameleons and even whales.But the researchers suggested that...

WASHINGTON — The Biden administration on Thursday will move to restore authority to states and tribes to veto gas pipelines, coal terminals and other energy projects if they would pollute local rivers...

Cuando una cucaracha macho quiere aparearse con una hembra, dirige su parte trasera hacia ella, abre las alas y le ofrece una comida casera: azúcares y grasas que salen prensadas de su...

Tesla, which had more than 99,000 employees at the end of last year, has moved its headquarters to Austin, Texas, from Palo Alto, Calif., though it still has a significant manufacturing and...