Science, Tech & Environment

Our stories cover science, technology, engineering, mathematics, the natural world and the environment

Science, Tech & Environment

A high-powered telescope peers into the dark heart of a black hole

Black holes may be exotic, but they are hardly rare. Every galaxy has one, including ours. But it's tough to look at and study black holes since their gravitational pull is so powerful light can't escape from them. But thanks to a new telescope that captures high-energy x-rays, NASA scientists are peering at their edges, confirming Einstein's theories, and may have gotten the first glimpse of a new kind of black hole.

Science, Tech & Environment

These university students have found a way to make prosthetic limbs affordable to the masses

The fact is, prosthetics can change the course of someone's life. But they're usually prohibitively expensive — available only to the well-insured and the well-to-do. But a team of graduate students in Massachusetts say they've found a way to build artificial limbs for just a few dollars, potentially making these life-changing devices available all over the world.