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

The life of a biologist may not be what you expect. It is not all white lab coats and microscopes. There are remote islands, makeshift shacks that serve both for sleeping and a field laboratory. For this guest, it also includes cricket serenades and nighttime scuba dives in the ocean filled with…

Step-by-step tutorial for building your own Pocket Seed Viewer. You can use it to test the effects of light, dark, temperature and gravity on seed germination and plant growth.

You might think that most places on Earth experience the changing of seasons because of the distance from the Sun. But, surprise, that's not the cause. Come and learn some new information to lean on about the tilt of the Earth. 

Little water, sweaty, hot summer days and frigid winter nights make the desert an uninviting place for most animals and plants. But hiding just below the surface, the desert is alive with microbes—tiny, living things too small to see without magnification.Also in:…

Looking into the past can be strange and exciting. To understand a past that goes back millions of years, we often depend on the stories told by fossils. Dr. Biology talks with anthropologist Donald Johanson about Lucy, a fossil of human ancestors that has taught us some…

Could these shy cats be living in Southern Arizona? Dr. Biology learns about these amazing animals from wildlife biologist Emil McCain. The two talk about the Borderlands Jaguar Detection Project and how two long-time hunters became the biggest fans and supporters for Jaguar…

Imagine you want to pull a long cylinder-shaped piece of soil (called a core) out of the ground in your backyard. What kind of tools would you need? Find out how researchers collect cores in the Frozen Arctic.

It's a colorful world out there and Dr. Biology checks into the reason we see color and how animals use color. Listen in as Dr. Biology talks with Kevin McGraw animal behavior biologist in the School of Life Sciences at Arizona State University.
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…

Some bees on a honeycomb

Bee Bonanza

Read Bee Bonanza and then take this quiz to test your knowledge!

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…

Four potential viruses that can be used in the game

Give It A Shot

Explore Give It A Shot

As our lives become more affected by viruses and bacteria that cause disease, how much does wearing masks and…

Rainforest virtual biome tour

Virtual Reality Tours of Biology

Explore our Virtual Tours

See the world of biology through virtual tours. Visit different environments, travel through…

An illustration of different cell sizes and a ruler, to measure nuclear cytoplasmic ratios

Cell Size SIM

Play the Cell Size SIM

Certain cell types should have a general size and have proportionate parts. But what if those sizes and proportions are…