Culture

How, and whether, to keep atomic time in sync with Earth’s rotation is still up for debate

Elon Musk wants to run Twitter like SpaceX. But human behavior will make it much more difficult

Under Elon Musk’s leadership, extremists could flock back to Twitter under the guise of “free speech,” and researchers are gearing up to study their impact

Science applies to every important social issue. Saying so doesn’t make us “unscientific”

The British royal family once led an empire based on white supremacy that caused suffering that continues today

Prevent your jack-o’-lantern from turning into moldy, maggoty mush before Halloween

The candy-colored drugs are the latest Halloween scare, but history suggests such fears are overblown

A cellular version of the computer game challenges assumptions about intelligence

An expert explains how numbers can mislead and what she’s doing to help people understand them better

A moral movement called longtermism, which focuses on protecting humanity’s future, dwells too much on artificial intelligence and not enough on war

Why evolutionary biology and social justice belong together, the Silicon Valley fatalism that’s ruining our planet, and more