Volume 87 | Number 5 | September-October 1999
A review of The Emergence of Whales: Evolutionary Patterns in the Origin of Cetacea, edited by J. G. M. Thewissen.
A review of A Means to an End: The Biological Basis of Aging and Death, by William R. Clark.
A review of The Rejection of Continental Drift: Theory and Method in American Earth Science, by Naomi Oreskes.
A review of Environmental Cancer: A Political Disease? by S. Robert Lichter and Stanley Rothman and The Polar Bear Strategy: Reflections on Risk in Modern Life, by John F. Ross.
A review of The Pleasure of Finding Things Out: The Best Short Works of Richard Feynman, by Richard Feynman.
A review of Astronomy in Prehistoric Britain and Ireland, by Clive L. N. Ruggles.
A review of Frankenstein's Children: Electricity, Exhibition, and Experiment in Early-Nineteenth-Century London, by Iwan Rhys Morus.
Total Records : 20
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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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