Eating bad tempeh usually causes mild food poisoning, but there's a rare toxic risk worth knowing. Learn the warning signs and how to store tempeh safely.
Environmental tobacco smoke poses real health risks for adults and children alike, and ventilation alone won't protect you. Here's what you need to know.
Radioactive isotopes are unstable atoms that release energy as they decay. Learn how they work and where they show up in medicine, energy, and daily life.
TB infects millions but spreads less easily than you'd expect. Here's why our immune systems, living conditions, and slow-growing bacteria all keep it in check.
Flu is leading this season's respiratory illness wave, with RSV, COVID-19, and norovirus also circulating. Here's what's going around and what to do if you get sick.