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

Explore our Virtual Tours.

See the world of biology through virtual tours. Visit different environments, travel through time, take a look inside a bee colony, or observe feeding hummingbirds.

A dangerous fungus arrived in North America from Eurasia that has been killing millions of bats. Is it possible that bacteria that are already on the bats' skin are their best allies in fighting this fungus?

Exploring space is exciting but are there drawbacks for astronaut immune function? Scientists are investigating how spaceflight affects immunity in fruit flies.

Germs are tiny organisms that can make you feel sick and cause disease. During this activity you will illustrate the steps germs take during transmission. You will learn about the different types of bacteria, how they are spread, and discuss ways to keep from getting sick.