Measuring the strength of gravity is extraordinarily difficult, and different experiments have always disagreed – but a new ...

Agentic AIs are on everyone’s lips. But are they your tools, or your partners? And what if they turn into a Gremlin after ...

AI safety-focused clubs share papers and host high school bootcamps, preparing to face ‘catastrophic’ dangers.

When a knot lets go, it doesn't just fall apart. It snaps. That simple observation led Penn Engineers to rethink what a knot ...

PBS NC helps your community explore new worlds and ideas through programs that educate, inform and inspire. Your ...

Discover 25 Inventions That Are Way Older Than You Think! From ancient batteries to Roman concrete, explore surprising origins of modern tech. Uncover hist ...

Earth’s gravitational force, g, has been known for centuries. But the exact value of G, the universal gravitational constant, ...

It does not resolve the discrepancy, but it gives physicists one more data point in their ongoing quest to nail down a more ...

It’s been a big year for the abundance movement, but what has it really achieved? Ezra Klein talks with his “Abundance” ...

Rotating, long-lived, severe thunderstorms called supercells tend to produce the largest hail. In supercells, hailstones can be suspended for 10-15 minutes or more in strong thunderstorm updrafts, ...