The classic signs of spring have been appearing for weeks across the South and are gradually inching northward.

JILA researchers are pioneering a nuclear clock using thorium-229, which offers unprecedented stability compared to atomic ...

The finest ever map of the cosmic microwave background - the faint evidence of the universe's early form - has yielded ...

A solid-state nuclear clock has a great potential to become a robust and portable timing device that is highly precise.

For decades, atomic clocks have been the pinnacle of precision timekeeping, enabling GPS navigation, cutting-edge physics ...

Even as a bipartisan coalition of lawmakers push for permanent daylight saving time, many Americans say they prefer permanent ...

Those two leagues span the four contiguous U.S. time zones and have footprints touching the Atlantic and Pacific coastlines with the arrival of former Pac-12 programs. USC, UCLA, Oregon and ...

The USDA divides the United States into seven planting regions, known as hardiness zones, which were most recently updated in 2023. The maps below show these planting regions. Need a break?

The USDA divides the United States into seven planting regions, known as hardiness zones, which were most recently updated in 2023. The maps below show these planting regions. Trouble seeing the map?