Science

When the Colombian drug lord Pablo Escobar was killed in 1993, most of the animals he had imported as pets — zebras, giraffes, kangaroos and rhinoceroses — died or were transferred to...

SpaceX’s “fail fast, learn faster” mentality means that the company does not expect everything to go right during a test flight.But sometimes a failure is more edifying than just brainstorming everything that...

On any given night, far from bright city lights, there’s a chance that you’ll see a beautiful streak shoot across the sky as a meteor flies overhead. But on special dates scattered...

Regulators in Britain on Thursday approved the first treatment derived from CRISPR, the revolutionary gene-editing method. Called Casgevy, the treatment is intended to cure sickle-cell disease and a related condition, beta thalassemia.The...

On April 20, SpaceX conducted the first full flight test of its Starship vehicle that is to one day carry astronauts to the moon and perhaps colonists to Mars. The brief flight...

SpaceX is preparing for the second test flight of Starship, the giant rocket that is being built to carry NASA’s astronauts to the surface of the moon and Elon Musk’s ambitions to...

A Moment That Sums It Up: 3:46 p.m.The millionth vet joined the database on the afternoon of Nov. 11. Employees who had waited a dozen years for this moment wept.As the goal...

The first time orcas appeared near his catamaran, Florian Rutsch was surprised, but prepared.Like many venturing around the Iberian Peninsula, Mr. Rutsch had browsed Facebook groups, Telegram chats and other online platforms...

The United States and China, the world’s two largest climate polluters, have agreed to jointly tackle global warming by ramping up wind, solar and other renewable energy with the goal of displacing...

Doctors have long relied on a few key patient characteristics to assess risk of a heart attack or stroke, using a calculus that considers blood pressure, cholesterol, smoking and diabetes status, as...