The common cold looks trivial compared with illnesses that fill intensive care units, yet it still knocks out workers, ...

Breakthroughs, discoveries, and DIY tips sent every weekday. Terms of Service and Privacy Policy. Before germs were first spied under a microscope by Robert Koch, a ...

Shop TODAY independently determines what we cover and recommend. When you buy through our links, we earn a commission. Learn more. While some people tend to run hot at night, others can never seem to ...

8:05 p.m. Aug. 15, 2025: This story has been updated with details of a COVID-19 variant. Summer heat, outdoor fun ... and cold and flu symptoms? The three may not go together in many people’s minds: ...

It’s a mystery that has puzzled families, classrooms and entire office buildings—why do some people seem to catch every sniffle, while others glide through cold season untouched? While most of us ...