The TV legend possessed an extraordinary understanding of how kids make sense of language.

Algorithms that take down “terrorist” videos could hamstring efforts to bring human-rights abusers to justice.

Landmark follows government pledge to phase out electricity from coal by 2025

Illicitly recycled gear has fueled profits for some expedition companies for years. But after some harrowing failures, Nepal is taking action as Everest climbing season begins.

A lot of software developers, according to an unprecedented new analysis.

Natalie Wolchover writes about physicists’ effort to find laws that explain the physical world and the nature of the universe.

The old rules are being rejected, among liberals and conservatives, politicians and economists.

Crash-test dummies based on the ‘average’ male are just one example of design that forgets about women – and puts lives at risk

In just a decade, Andreessen Horowitz has backed a bevy of startup blockbusters— Facebook, Instagram, Lyft, Slack—and made just as many Silicon Valley enemies. To stay ahead, it’s taking the unusual s...