DARPA

The moon over Earth, as seen from the GOES-16 satellite

Satellites are destined to become space junk. But in the future, we may be able to retool them.

Technology

Most satellites are engineered to last a long time, but there’s no way to repair or refurbish them. They simply become obsolete. Government agencies and private companies are trying to change that.

Gut bacteria

Microbes may hold the key to future high-tech meds and materials

Science
The World

Molten metals to green the grid

Environment