Volume 92 | Number 1 | January-February 2004
A Brand-New Bird tells the story of a German schoolteacher in the 1930s who was obsessed with producing a red canary by interspecies hybridization
Sins against science and history have obscured the truth behind some of the greatest scientific discoveries
David Quammen reminds us that for most of human history we've been potential lunch meat for lions and tigers and bears
From 1500 to 1800, the search for fresh soils and hunting grounds caused remarkable damage to the environment
A former astronaut discusses three recent books about the challenges faced by women who have reached for the moon
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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