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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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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

Building Your Own Ant Farm (Part 2 of 2). Ask A Biologist video with Dr. Biology and Rebecca Clark on how to build an ant farm with recycled CD cases. Watch part one.

The Arctic is changing faster than many other ecosystems. This habitat is in danger, as are the animals that live there, and the peoples whose lives have always depended on the lands and food webs of the Arctic. One of the best ways to help save it is to learn more about it.

An interview with, biologist, movie maker, and Pulitzer Prize winning author Bert Hölldobler. Venture into the world filled with amazing facts and feats by an animal that will remain a mystery... at least until you listen to the clues at the beginning of this episode and make…

Around 4,000 years ago, on the wind-swept island of St. Kilda, Scotland, people started creating a food storage of sorts. They moved a population of sheep to the island, likely as a backup food resource for when times were tough. Little did they know that their actions would affect 21st-century…

Do you need to run five miles every day to get in shape and be healthy? Dr. Biology has a chance to sit down after a workout session to talk about exercise and kids with metabolic biologist Gabriel Shaibi. What he and a group of researchers found might surprise you.

Television portrays the lives and work of forensic artists, but what is it like to really be a forensic artist? Are the tools you see on the big and little screen really used by the people who recreate the face of someone when there might only be a skull or parts of a scull to use as a starting…

As the town faces unspeakable forces of nature, who will save the day?

some puzzle pieces with pollen cells

Pollen

Read Pollen - Nature's Tiny Clues and then take this quiz to test your knowledge!

a shadow of a person seeing a human like shaped hole on the floor

Scientific Method

Read Using the Scientific Method to Solve Mysteries and then take this quiz to test your knowledge!

Zoomed in picture of assassin bug

Ugly Bug Contest 2010

Ugly Bug Contest 2010

Cracking CRISPR

Play Cracking CRISPR

DNA is the key to life, so it's no wonder that we've been working to crack the code. With the tool CRISPR Cas9, we've been…

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.

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.

Feather Zoom Gallery (Feathers up-close)

There is nothing like seeing a feather up close.

internet puzzle

How to Find What You Need on the Internet

Searching for things on the Internet can be like hunting for a needle in a large haystack. Just how large is the Internet?

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Time traveling seeds

Time Traveling Plants

Every year billions of babies are dried and buried, not to be unburied for weeks, months, years or even decades. Don't worry, these are not babies like your little brother or sister, these are…

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Desert Fruits Rock!

Desert Fruits Rock!

Desert flowers do not own the spot light when it comes to beauty. Many desert fruits deserve equal attention.Also in: Español |…

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Itty Bitty Beasts

Itty Bitty Beasts

Tardigrades are some of the toughest animals on earth. They can survive freezing, drying up, radiation, and space, all while being smaller than the tip of a pencil.

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