Earth's Seasons

Severe urinary tract infections spike in the summertime, especially among younger women, a new study finds.

This Sunday (June 21) marks the summer solstice, the official start of summer in the Northern Hemisphere.

You know you should wear sunscreen, but do you know what to look for in a sunscreen?

A new NASA image hints at the complex factors that encourage giant plankton blooms in the North Atlantic.

Infections with difficult-to-treat and sometimes deadly gut bacteria called "C. diff" are highest in the spring, according to a new study.

People in snowier states appear to sleep for a little longer during winter months than those in sunnier states.

The polar vortex isn't the only weather system to blame for your frozen fingertips.

Winter is almost here, and that means a likely increase in people falling ill from flu. But why is flu season in winter anyway?