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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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Estrogen and testosterone are two hormones that cause puberty. But what happens when the body doesn’t produce the amounts of hormones that it usually does?
Dr. Biology sits down to learn from two of the best science journalists in the world. Listen in as he gets some pointers from Pauline Davies and Robyn Williams.

When you visit a pond or the beach, what kinds of living things do you see in the water? Depending on the environment, you might find fish, frogs, crabs, insects, seaweed, or lily pads. Don’t let your eyes fool you, though… there’s a hidden world in water full of creatures too small to be…

Extreme environments can be found on Earth, in space, and in the depths of the ocean. Dr. Biology and physiologist, astronaut, and mountain climber Scott Parazynski sit down and talk about what life is like to explore these environments. So hold on to your seat as we blast off…

If you had x-ray vision, where would you look first? Some of our biologists have looked inside of beetles to learn more about how they breathe and fly.

An interview with biologist Pierre Deviche and his passion for recording some of natures most interesting animals. Humans are not the only animals that have dialects as you will learn in this show. Dr Biology tests your skills again with a mystery animal quiz at the beginning of…

This is the story of wild rabbits, humans, and a virus that might lead to a treatment for cancer. It is also a lesson about learning from history and how a virus that is deadly to some rabbits could become a new cancer-fighting tool for humans. Twice humans moved wild rabbits from Europe to other…

Can a transformed 4-acre former citrus orchard become a vibrant urban wildlife sanctuary? Dr. Biology is out of the studio to explore Julie Stromberg's remarkable riparian garden. Julie, a plant ecologist and emeritus professor at Arizona State University, shares her motivations…

Plankton Zoom Gallery (Plankton up-close)

Plankton 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.

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.

Darwin and Mendel's Afternoon Tea

Darwin and Mendel's Afternoon Tea

An imaginary conversation between two great thinkers, Charles Darwin and Gregor Mendel. While the monk, Mendel, had read Darwin’s publications - Mendel's work only came to be known later. We…

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Large Ants

Face to Face with Ants

Imagine being the size of an ant. Be careful - a face-to-face encounter with an ant would be scary and potentially life-threatening! But, if you avoided being eaten, you could learn a lot about…

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Bee with mites

Mite Mighty Foe to 'Killer' Bees in State

Africanized "killer" bees have fallen prey to a deadly predator of their own- parasitic mites whose infestation has dropped their wild colony numbers by as much as 70 percent statewide.

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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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