Blood Flow and Thermoregulation

In this interactive activity adapted from the University of Alberta, learn about the ways your body can regulate its temperature.

Everyday Radiation

How much radiation are we exposed to every day? Find out in this video segment adapted from FRONTLINE.

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Evolving Ideas: Why Does Evolution Matter Now?

In this video from Evolution, an exploration of multi-drug resistant tuberculosis in the Russian prison system highlights one reason it is important to understand evolution.

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Facts About Radiation

This document from the FRONTLINE Web site offers examples of everyday exposure to radiation.

Finding Cures Is Hard

This video segment from NOVA: "Cracking the Code of Life" explains the difficulty of curing genetic diseases such as cystic fibrosis.

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Function of Fever

Fevers are a sign of infection, but they may also be part of the cure. This drawing illustrates Matthew Kluger's lizard study, which supports the notion that fever can be beneficial.

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Gallery of Cells

While all cells have a great deal in common, there is no end to the variation among them. These images provide a sense of the wondrous diversity found in the world of cells.

The Science Behind Appetite

This video segment, adapted from NOVA, tells the story of a ballerina battling anorexia. It explains how serotonin regulates appetite, and presents some of the health risks that accompany the eating disorder.

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Immune Cells in Action

In this video segment from The Secret of Life Teaching Modules: "Nothing to Sneeze At: Viruses," watch as a virus attacks a cell, and learn how the immune system reacts to this onslaught.

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Is Lactic Acid a Four Letter Word?

This essay by Patti and Warren Finke describes the process by which our bodies transform food energy into energy that our cells can use.

Microbe Clock

In this Evolution Web feature, learn how mutation and fast reproductive rates can allow deadly microbes to outpace medical breakthroughs.

Mouse Party

In this interactive activity from The University of Utah, examine the molecular mechanisms that affect the brains of mice on drugs. Learn how different drugs create different responses in the brain and alter the natural state of a mouse.

Nuclear Reaction: Searching for Safety

This text excerpted from Beyond Engineering: How Society Shapes Technology by Robert Pool and reprinted on the FRONTLINE Web site looks at the impact of nuclear power.

Pellagra

In this video segment adapted from A Science Odyssey, learn about pellagra, a mysterious and deadly disease that affected populations living in the American South in the early 20^th century, and how a scientist experimented to find a cure.

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Radon Radiation

The biggest source of environmental radiation might be in your home. Find out more in this video segment adapted from FRONTLINE.

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RNAi Therapy

In this video segment adapted from NOVA scienceNOW, learn about RNAi's potential to treat a wide range of genetic and infectious diseases.

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Sources of Radiation

This interactive activity from the NOVA Web site explores sources of radiation, both harmful and beneficial, natural and manmade.