Think Garden: Photosynthesis

This video explains the process of photosynthesis through a fun poem with stop motion animation. Learn about what chloroplasts and chlorophyll do, and why sunlight, water, carbon dioxide, oxygen, glucose, and carbohydrates are important to the process.

Albino Redwoods: Ghosts of the Forest

Pale ghosts that hide amid their gigantic siblings, only a few dozen albino redwood trees are known to exist. In this video from QUEST produced by KQED, track down these elusive phantoms of the forest.

Albino Redwoods: Ghosts of the Forest Audio

Park rangers in the Santa Cruz Mountains are protecting a decades-old secret: albino redwood trees. In this audio report from QUEST produced by KQED, learn about these so-called "ghost trees."

Animal and Plant Cell

Think you can tell a yam from a yak? Examine these still images of typical plant and animal cells from Biology by Kenneth R. Miller and Joseph Levine. What similarities and differences can you find?

Biofuels: Beyond Ethanol

In this video from QUEST produced by KQED, find out what scientists are discovering in investigating the newest methods for converting what we grow into what makes us go.

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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Illuminating Photosynthesis

This interactive feature from the NOVA: "Methuselah Tree" Web site details the process of photosynthesis and its role in the oxygen/carbon dioxide cycle.

Life Before Oxygen

This Interactive NOVA: "Earth" video segment looks at ancient organisms that lived anaerobically, the origins of photosynthesis, and the new forms of life this process made possible.

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Photosynthesis

This video segment from Interactive NOVA: "Earth" looks at photosynthesis, the chemical process plants use to make their own food.

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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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