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

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Have you ever wondered where plants get their mass? All those leaves and branches have to come from somewhere, but where?

The rainforest is the wettest biome on Earth and is home to half of all species.Also in: Français | Español | Italiano |

Fruit may just be something that you like to eat. For the fig wasp, fig fruit is more than just a food--it's where life begins and ends.

What would life be like on other planets? This is just one of many questions that Biochemist and author Nick Lane talks about while visiting with Dr. Biology. Listen in as Nick explores not only life on our Earth, but also what it might be like on other planets. Nick also reads…

A city saved and thanks to a last minute 100 Ugly Bug Contest votes, an amazing win for the Astonishing Treehopper.

An interview with biologist Doug Lake from the Arizona State University School of Life Sciences. Dr. Biology and his co-host Ramon Santos find out how something as simple as a paper cut can put our body defense to work.

These fluttering icons of North America are a favorite of many people across the world, but they may be having some population problems. Don’t worry though, there are ways you can help. Conservation specialist Gail Morris talks with our student guest host Kayna Lantz…

An interview with biologist Rebecca Clark. Dr. Biology and his co-host Itzany Mendez look into lives of ants and learn some pretty cool things including how to build a slick ant farm using two music CD cases.
a cartoon of nerves

Nervous System

Read A Nervous Journey and then take this quiz to test your knowledge!

Human skeleton game

Skeleton Viewer

Explore the Skeleton ViewerTo explore the bones of the human skeleton, check out our Skeleton Viewer. Take a look further inside of a bone with our…
Poppy flower

Composting

Microorganisms in action! Turn a pile of grass clippings into an experiment.

Bone Zoom Gallery (Up-close Inside Bones)

Take a look at the microscopic world of bone in our virtual bone histology lab. Just pick a microscope slide from below and click on it to view under the virtual microscope.

Pollen Gallery (Pollen up-close)

Pollen comes in many shapes and sizes. These are just a few of the thousands of examples.

Tiger Beetle Zoom Gallery (Up-close with tiger beetles)

Some of the fastest animals on Earth are below. That’s right, if these tiny insects were as large as a horse they would be running 200 miles an hour.

Plankton Zoom Gallery (Plankton up-close)

Plankton comes in many shapes and sizes. These are just a few of the thousands of examples.

Girl inspecting ecosystems

I Spy an Ecosystem

We hear the word ecosystems in the news and at school but just what are ecosystems? It turns out there are lots of ecosystems. You might even learn you have some inside you! Also in:…

Wordsearch | Crossword
Leafhopper

True Bugs

Not all insects are bugs, but all bugs are insects. How can this be? Learn about some particular insects that biologists call true bugs. Also in: Español…

Wordsearch | Crossword
Birds and their Songs

Birds and Their Songs

We see them practically everywhere. They are found flying in the high mountains and soaring along the thermal winds in the low deserts. There are those that are reclusive and others you can…

Wordsearch | Crossword
Scorpion with laser beams

Not So Scary Scorpions

Scorpions are often misunderstood. Many people say that scorpions are so aggressive they will sting themselves to death, but this is not a natural behavior of scorpions in the wild. Also in:…

Wordsearch | Crossword