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

Ouch! You just got a paper cut on your finger. What happens now? Besides the sting you are feeling from the cut, there are germs on that paper that are preparing to invade your body. For your immune system, this means war.Also in: Türk

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. Also in: Português | Español

Hospitals try to stay clean and reduce the spread of germs within their walls, but what happens when medicines and bacteria from the hospitals reach bacteria in the sewer?

Our biological sex is mainly controlled by our sex chromosomes. But sex hormones also influence what body parts and characteristics we have.
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…
Feeling stressed out? Wonder what stress is or how to best to deal with stress? Then you might like to listen in as Dr. Biology talks with Miles Orchinik, Associate Professor in the School of Life Sciences at Arizona State University, about his work on stress.
Dr. Biology gets the skinny on our largest organ - our skin. Professor and author Nina Jablonski talks about the important ways our skin works for us each day.

We hear a lot about DNA, but not as much about RNA. It is true that DNA is the encyclopedia of life or the ultimate instruction manual for living things. But what good is a book if it is not read or an instruction manual that is not used? This is where RNA comes into the story of life. It is the…

Preserving plant specimens

Create Your Own Herbarium

Have you ever seen an interesting plant that you wanted to keep? The best way to preserve a plant specimen is to press it and dry it. Here are the simple materials and steps you need to make…

small bugs on sticks

True bugs

Read True Bugs and then take this quiz to test your knowledge!

A pipe filling a glass of dirty water with an arrow to another pipe filling a glass with clean water.

Water Treatment Facility Game

Play Water Treatment Facility Game

Build your own water treatment plant by placing the cleaning steps in the correct order! Learn how each…

bee dance

Bee Waggle Dance Game

Play the Bee Dance Game

Did you know that honey bee workers tell their sisters where to find the best flowers and nectar with a dance? It is called…

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-…

EcoChains logo, a polar bear over an iceberg with text below that says EcoChains.

EcoChains: Arctic Futures

Play EcoChains: Arctic Futures

EcoChains: Arctic Futures is a game that introduces you to arctic life and ice that is so very important for survival.…