Tropical storms such as typhoons, hurricanes, and cyclones are Earth's most powerful weather systems. Born over warm oceans, ...

Norovirus cases are rising across the United States as a highly contagious new strain fuels an early winter surge. Here’s what to know about symptoms, spread, treatment, and why hand sanitizer does ...

By studying faint distortions in galaxy shapes across a vast region of sky, scientists probed the hidden structure of the universe. In the standard picture of the universe, nearly everything is hidden ...