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

Tardigrades are some of the toughest animals on earth. They can survive freezing, drying up, radiation, and space, all while being smaller than the tip of a pencil.

Science is full of mysteries and unknowns waiting for you to discover. Beyond their usual research, there have been some unusual things happening in Dr. Biology's laboratory and they need your help. It is up to you to uncover what is happening.

For many organisms, reproduction is a huge part of life. But what, exactly, does reproduction mean? Well, it can mean so many different things, including breeding or not, caring for young (or not), or giving birth (or not)... read on to learn about the diversity of ways that organisms reproduce.

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?