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

Lakes, ponds, streams, and rivers are all sources of freshwater. But there is a lot less freshwater on earth than you might think. Fall into freshwater with us to learn some new things about this near-saltless water biome.Also in: Español |…

David Pearson is a research professor in Arizona State University's School of Life Sciences. A speaker of five languages and capable of getting into trouble in maybe three or four other languages, he's traveled the world studying tiger beetles and recently published the book, A Field Guide to…

You may see advertisements for vitamins all the time. Do we really need vitamins? And if we do, how do we know which vitamins are high quality? Take a tour into the history, science, and manufacturing of vitamins.Also in: Español

Almost all life forms start out as small cells, but how do they grow into entire animals? Read about the first step here: when cells in an embryo form germ layers that give rise to every organ and tissue in the body.

When you visit a pond or the beach, what kinds of living things do you see in the water? Don’t let your eyes fool you… there’s a hidden world in water full of creatures too small to be seen!

Not everyone has been on a hike and very few have hiked with a park ranger. Dr. Biology hikes South Mountain Park with not one but two park rangers. Park Rangers Liz Smith and Justin Olson are our guides for the 2.5 mile trip up Holbert Trail. This episode…

Dr. Biology takes trip to visit Michael Berens, adjunct professor in the School of Life Sciences at Arizona State University and Senior Investigator at Translational Genomics Institute (TGen).

An interview with biologist Pierre Deviche and his passion for recording some of natures most interesting animals. Humans are not the only animals that have dialects as you will learn in this show. Dr Biology tests your skills again with a mystery animal quiz at the beginning of…

hand bones

Busy Bones

Explore the Bone Anatomy Viewer

Ever wonder what’s inside your bones? Here’s your chance to find out! Dissect a virtual bone and learn…

An illustration of pea pods with different genes (yellow and green, and round and wrinkled)

Genetics Game

Play Garden Gene Genius

Our genes control much of how we look and who we are. But do you really know how genetics work? Take a moment to gather some…

A clean glass of water with sparkles around it.

Water Activities Central

Visit Water Activities Central

Water is an essential part of our lives. It keeps us alive, helps to grow our food, helps keep our…

Beetle Dissection

Beetle Dissection

Explore the Beetle Dissection

The outside of beetles can be shiny, dull, or extremely colorful. But what is going on inside of beetles…