Volume 87 | Number 4 | July-August 1999
A review of Louis Pasteur, by Patrice Debré.
A review of Ancestral Images: The Iconography of Human Origins, by Stephanie Moser.
A review of Visual Intelligence: How We Create What We See, by Donald D. Hoffman.
A review of Neandertals and Modern Humans in Western Asia, edited by Takeru Akazawa, Kenichi Aoki and Ofer Bar-Yosef.
A review of Untangling Ecological Complexity: The Macroscopic Perspective, by Brian A. Maurer.
A review of The Deep, Hot Biosphere, by Thomas Gold.
A review of The Birth of the Cell, by Henry Harris.
A review of Deep Time: How Humanity Communicates Across Millennia, by Gregory Benford.
A review of Science under Socialism: East Germany in Comparative Perspective, edited by Kristie Macrakis and Dieter Hoffman.
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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