Khan Academy
Khan Academy: Vi Hart: Doodling in Math: Spirals, Fibonacci (Part 2 of 3)
Video explaining the principle by which plants arrange their flowers in order to maximize the gathering of sunlight, which relates to the Fibonacci series. [6:14]
Science Friday Initiative
Science Friday: Finding the Roots of an Ancient Crop
Agave plants, probably best known as the source of tequila, were important as a food crop long before the invention of margaritas. Wendy Hodgson, botanist at the Desert Botanical Garden in Phoenix, says the plants were cultivated as far...
PBS
Pbs News Hour: Here's What Contributed to the Extinction of the Ivory Billed Woodpecker
The U.S. Fish and Wildlife Service proposed moving 23 animals and plants off the endangered species list, declaring them extinct. Perhaps the most well-known of the species deemed gone forever is the ivory-billed woodpecker. These...
Crash Course
Crash Course Biology #6: Plant Cells
Hank describes why plants are so freaking amazing - discussing their evolution, and how their cells are both similar to & different from animal cells. [10:28]
Bozeman Science
Bozeman Science: Plant Structure
Paul Andersen explains the major plants structures. He starts with a brief discussion of monocot and dicot plants. He then describes the three main tissues in plants; dermal, ground and vascular. He also describes the plant cells within...
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