Volume 94 | Number 4 | July-August 2006
A review of An Argument for Mind, by Jerome Kagan. Kagan, a well-known developmental psychologist, uses his life story to trace the history of the field over the past half-century
A review of Field Notes from a Catastrophe: Man, Nature, and Climate Change, by Elizabeth Kolbert and The Weather Makers: How Man Is Changing the Climate and What It Means for Life on Earth, by Tim Flannery. Can our hunter-gatherer minds rise to meet the challenges posed by modern industrial society?
A review of The Nature of Paleolithic Art, by R. Dale Guthrie. Guthrie argues unconvincingly that ecology is the key to understanding ancient cave art
Total Records : 13
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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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