Growing Plants in Space

Learn about the challenges and benefits of growing plants in space from plant biologist Dr. Ray Wheeler in this video from NASA.

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Plants-in-Motion

While we tend to think of plants as stationary, they are in constant, though very slow motion, as they respond to environmental factors. Watch plants move in time-lapse videos in this interactive activity adapted from Indiana University.

Single-Celled Organisms

This video segment explores the astounding diversity of the world's smallest life forms: single-celled organisms.

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Studying Global Warming in Biosphere 2

In this What's Up in the Environment? video segment, an international team of scientists in Arizona's Biosphere 2 laboratory studies the impact of increased carbon dioxide emissions and how that might affect our future global environment.

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