The Elusive Peril of Space Junk

With supply scarce in Lagos, Nigeria, hospitals rely on men with motorcycles to make their deliveries—but the margins for error are razor-thin.

A foundational 1956 study of the concept, focussed on a U.F.O. doomsday cult, has been all but debunked by new research.

The industry has lost billions of dollars, largely because smoke makes the drink taste like licking an ashtray. Now a team of scientists is chasing a solution.

The platform has become a core technology around the world, relied on by governments and extended families alike. What are we all doing there?

Proven methods for teaching the readers who struggle most have been known for decades. Why do we often fail to use them?

Some patients don’t trust us. Others say they don’t need us. It’s time for us to think of ourselves not as the high priests of health care but as what we have always been: healers.

Free-speech norms and powerful tech companies make legal restrictions unlikely—but social changes are already taking place.

The U.S., once Denmark’s closest ally, is threatening to steal Greenland and attacking the country’s wind-power industry. Is this a permanent breakup?

This was supposed to be the year when autonomous agents took over everyday tasks. The tech industry overpromised and underdelivered.

Will Pope Leo XIV follow the progressive example of his predecessor or chart a more moderate course? His work in Chicago and Peru may shed light on his approach.

A streamer’s investigation of fraud in Minnesota garnered millions of views. His content was questionable, but his methods will likely inspire scores of imitators.

This was the year that A.I.-generated content passed a kind of audiovisual Turing test, sometimes fooling us against our better judgment.