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

Some ticks carry a nasty bacteria that they can pass on to humans when they bite. Learn how the health status of the humans they bite helps control what they pass.

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.

When you think of kangaroos, you may just think of a hopping furry creature that has a pouch... but there is so much more to learn about them. Let's jump into the lives of kangaroos.

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