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photosynthesis

Illuminating Photosynthesis
Image: istockphoto.com/Logray-2008

Illuminating Photosynthesis

Vital for feeding almost all life on Earth, photosynthesis is basically a simple cycle.

Plants take in sunlight and water to make oxygen and carbohydrates, and animals exhale carbon dioxide that plants need for photosynthesis. Explore the cycle further and see where you fit in.

NOVA/PBS
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Did You Know? Photosynthesis

Did You Know? Photosynthesis

Plants and some microbes capture energy from the sun and store it as chemical energy via photosynthesis — a key process for life on Earth. More...

Article
BBC
Discovery of Photosynthesis

Discovery of Photosynthesis

A jar, a flame, and a leaf. Watch to learn how nearly 250 years ago scientists discovered the biochemical process that came to be known as photosynthesis. More...

Video
Discovery
Oxygen and Photosynthesis

Oxygen and Photosynthesis

Plants produce oxygen during photosynthesis, and now you can demonstrate it yourself. Gather a few materials and let the project begin. More...

Activity
Science Fair Projects
Photosynthesis Song

Photosynthesis Song

Photosynthesis is life, sings Mr. Parr. You can thank Eminem for the beats and start singing along. More...

Video
Mr. Parr
Photosynthesis at work

Photosynthesis at work

Leaves, if not for them there would be nothing to breathe at all. In all their variety, each type of leaf carries out the essential work of photosynthesis. More...

Video
BBC
Photosynthesis vs. Chemosynthesis

Photosynthesis vs. Chemosynthesis

Most living organisms rely on photosynthesis, but sunlight doesn't reach the bottom of the ocean. Investigate the similar process of chemosynthesis to discover how deep-sea microbes get their energy. More...

Interactive
Woods Hole Oceanographic Institution
Photosynthetic Bacteria Pick Best Light

Photosynthetic Bacteria Pick Best Light

Take exactly one minute to listen and clear up the conundrum of how blue-green algae produce 20 percent of our planet’s oxygen — even though they are actually photosynthetic ocean bacteria. More...

Interactive
Scientific American
Scientist Profile: Biologist

Scientist Profile: Biologist

Microscopist Liz Stryjewski is exploring how to grow plants in space with LEDs. Examine the role of red light in "un-Earthly" photosynthesis. More...

Profile
DragonflyTV/PBS
Why Study Photosynthesis

Why Study Photosynthesis

Necessary for nearly all living organisms on Earth, photosynthesis is connected to our food, energy, and environment. Explore how scientists work to harness this process for medical and other advances. More...

Article
Arizona State University

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