Volume 90 | Number 3 | May-June 2002
A review of Lichens of North America, by Irwin M. Brodo, Sylvia Duran Sharnoff and Stephen Sharnoff
A review of Flora: An Illustrated History of the Garden Flower, by Brent Elliott
A review of Stephen Forbes and the Rise of American Ecology, by Robert A. Croker
A review of Shaping Science with Rhetoric: The Cases of Dobzhansky, Schrödinger, and Wilson, by Leah Ceccarelli
A review of A Life of Sir Francis Galton: From African Exploration to the Birth of Eugenics, by Nicholas Wright Gillham
A review of Science Fictions: A Scientific Mystery, a Massive Cover-up, and the Dark Legacy of Robert Gallo, by John Crewdson
A review of The Infant's World, by Philippe Rochat
A review of Future Perfect: Confronting Decisions about Genetics, by Lori B. Andrews
Total Records : 18
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ANIMATION: Hydrangea Colors: It’s All in the Soil
The Hydrangea macrophylla (big-leafed hydrangea) plant is the only known plant that can 'detect' the pH level in surrounding soil!
One of the world’s most popular ornamental flowers, it conceals a bouquet of biological and biochemical surprises. The iconic “snowball” shaped hydrangea blooms are a common staple of backyard gardens.
Hydrangea colors ultimately depend on the availability of aluminum ions(Al3+) within the soil.
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