Jacobson/NIST After two decades of tinkering, scientists at NIST have unveiled the world’s most accurate atomic clock, a ...

For nearly a century, scientists have been trying to find dark matter—the invisible substance that seems to make up about 80% ...

The 54-pound NWA 16788 has set a new world record as the most valuable meteorite ever sold at auction. The first major ...

Dustin Mulvaney traces the current deregulatory bonanza that the Trump administration has unleashed on public lands and waters to the Wise Use movement of the 1980s and the Sagebrush Rebellion that ...

The laser beam traveled 3.6 kilometers (over 2 miles) via fiber optic links to NIST, where a frequency comb (acting as a “ruler for light”) allowed the aluminum ion clock’s laser to adopt its superior ...