Learn how to use the sun and a clock to determine longitude in this interactive game. Produced by WGBH/Nova.  

In this interactive activity adapted from the National Library of Medicine, explore the environmental hazards found on farms, including agricultural runoff, barns and silos, crop fields, farm animals, farm ponds, feeding operations, homes, landfills, and off-road vehicles. Produced by WGBH/Tox … Continue reading

Let’s face it — you need a certain number of calories just to keep going — up to 2000 a day! But what does it take to burn off those “extra” calories? Ask the CAT! Produced by MPT.

Why do we eat? How do our bodies use the foods we eat? What organ or system in your body may not be getting enough of what it needs? This interactive feature from NOVA’s “Dying to Be Thin” Web site … Continue reading

This interactive activity adapted from “Air Quality Index: A Guide to Air Quality and Your Health” by the U.S. EPA examines how data related to pollutants in the air are collected and reported. Produced by WGBH/Air Quality Index: A Guide … Continue reading

Here’s a look at five of the most important technologies that have allowed scientists to peer inside the workings and structure of the living human brain. Produced by WNET/Secret Life of the Brain.

How do epidemiologists track disease outbreaks? Find out as you try to trace a mysterious new illness to its source. Produced by WGBH/Nova.

The Isle of Mull is the fourth largest Scottish island, and its 300-mile coastline supports a wide range of species. Follow filmmaker Gordon Buchanan to his favorite locations on and around the island. Produced by WNET/Nature.

One way researchers can navigate the icy waters at the Earth’s poles is aboard a rugged, steel-plated ship known as an icebreaker. Produced by the PBS NewsHour.

From Galileo’s thermoscope to a recent experiment that reached less than a billionth of a degree above absolute zero. Produced by WGBH/Nova.

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