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

All over the world, plants are dependent on secret partners—bacteria and fungi—for their survival. But what happens to these relationships if new, exotic plants move into the area?

Bats are very social, and by reading their brains we can see them reacting in real time to the calls of other bats. When you have thousands of bats calling at the same time, how easily can they know who is who, or separate a friend from a stranger?

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.

Cacti live in one of the harshest climates on the planet: the desert. Scientists are investigating how we can make life easier for these desert-dwelling plants.