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

What happens when a person wants to have a baby, but after years of trying, it just doesn’t happen? A lot of people want to become pregnant, but let’s learn about what may prevent pregnancy.

The colorful wings of butterflies and moths aren't just part of a beauty contest.  Learn how these changes in coloration have allowed species like the peppered moth to survive in an ever-changing environment.Also in: Deutsch | …

Your stomach is full of tiny organisms that live in peace and harmony with your body – but what happens when the peace is disrupted?

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.
An interview with cellular researcher and explorer Carolyn Larabell of the National Center for X-ray Tomography. Dr. Biology learns about the new microscope being developed to see inside cells in a way never before possible.
An interview with biologist Kevin McGraw. Dr. Biology and his co-host Brian Varela learn a lot about feathers and all the ways birds used them. This is a colorful and wild show that you will not want to miss.
An interview with biologist Tina Wilson from the Desert Botanical Garden in Phoenix Arizona. Listen in as Dr. Biology learns how cacti and other desert plants keep their cool.

The tiny world of nanobiology is the topic of this show. Dr. Biology sits down with nanobiologist and physicist Stuart Lindsay to learn about nanobiology and some of the cool and strange things that happen when things are so small.

Cell viewer game

Cell Parts Game

Explore the Cell Viewer Game

Cells are the basic building blocks of life, but what all do cells hold? You can now look inside of cells to learn…

a bird singing

Birds Hormones and Seasons

Read Singing in the Rain and then take this quiz to test your knowledge!

An abstract icy background with five animal icons over it, connected by dotted lines showing the connections between species that live on the ice.

Frozen Connections

Sea ice forms the foundation of the Arctic ecosystem. It provides food, shelter, breeding areas, and hunting grounds for many species. How are humans, plants, and animals all connected to each other…
Solving mysteries illustration

Using the Scientific Method: The Case of the Mystery Images

Play The Case of the Mystery Images

Looking for another detective assignment? Practice all the new detective skills you learned in the…

Nano building game

Nano Building

Play the Bionanoengineering Game

Basic building patterns can be used to think about how technologies are built at the nano-scale. Try your hand…

A tablet, squash, plant, and fish

Conserving Water

Play Water Conservation Game

How can you save water? You might start by figuring out what uses the most water in your life. In this choice-…

Cartoon of two scientists one male and one female.

Doctor Know

Play Doctor Know

Play doctor in the 21st century! Practice modern medicine by examining all dimensions of the body, from organs to molecules, as…