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

Every year, vaccines protect millions of people from getting sick. But how, exactly, do vaccines work? Learn the science behind how vaccines protect us from disease.
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Mushrooms release billions of spores into the air each year. Could those spores help promote rain by seeding new rain clouds?

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.

We usually worry about getting sick from other people or from spoiled food. But did you know that some animals, like rats and mongooses, can make you sick too?