Welcome to Ask A Biologist. This site has a large collection of biology learning materials that includes stories, games, activities, videos, and a podcast.

Coronaviruses can cause the common cold, or worse infections, like COVID-19. Brenda Hogue studies how these viruses replicate and infect, and uses this information to try to make vaccines and other medicines.

RNA is an important molecule that often helps your body make proteins. But RNAs aren’t all the same—some may help your immune cells fight off infections by providing them with extra sugar.

As our climate changes, wildfires seem to become more and more damaging. But are wildfires automatically bad? And how can we learn to live with a future filled with fire?

What happens when the ocean gets really hot, really fast? Every few years, the El Niño pattern heats up the ocean quickly. Now global warming is also having an impact on coral reefs.