Gastrointestinal illnesses on cruise ships hit a 12-year high in 2024, and 2025 has been even worse, with cruise lines seeing an entire year's worth of outbreaks in only the first quarter of the year.

In recent months, the U.S. government has taken steps to defund and dismantle key infectious disease programs, including a National Institutes of Health lab that has contributed to groundbreaking work ...

Breakthroughs, discoveries, and DIY tips sent six days a week. Terms of Service and Privacy Policy. To mark our 150th year, we’re revisiting the Popular Science ...

Germ theory led to some of the most important advances in human health: hand washing, vaccines, antibiotics, clean water systems, and improved hygiene practices in hospitals, schools, and restaurants.