Volume 90 | Number 2 | March-April 2002
A review of Mind in Everyday Life and Cognitive Science, by Sunny Y. Auyang
A review of Pox Americana: The Great Smallpox Epidemic of 1775û82, by Elizabeth A. Fenn, and Scourge: The Once and Future Threat of Smallpox, by Jonathan B. Tucker
A review of The Alfred Russel Wallace Reader: A Selection of Writings from the Field, by Jane R. Camerini, and Alfred Russel Wallace: A Life, by Peter Raby
A review of Secret Knowledge: Rediscovering the Lost Techniques of the Old Masters, by David Hockney and Vermeer's Camera: Uncovering the Truth behind the Masterpieces, by Philip Steadman
A review of The Skeptical Environmentalist: Measuring the Real State of the World, by Bjørn Lomborg
Total Records : 15
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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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