Volume 90 | Number 1 | January-February 2002
A review of Three Roads to Quantum Gravity, by Lee Smolin
A review of The One Culture? A Conversation about Science, edited by Jay A. Labinger and Harry Collins
A review of The Colossal Book of Mathematics: Classic Puzzles, Paradoxes, and Problems, by Martin Gardner
A review of Synapses, by W. Maxwell Cowan, Thomas C. Südhof and Charles F. Stevens
A review of Hubbert's Peak: The Impending World Oil Shortage, by Kenneth S. Deffeyes
A review of Prime Numbers: A Computational Perspective, by Richard Crandall and Carl Pomerance
Total Records : 17
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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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