Marrying Paleontology with Photography
The 78 splendid photographs of fossils in Ancient Microworlds, by Giraud Foster and Norman Barker (Custom and Limited Editions, $65), include barks, corals, leaves, fishes, crustaceans, seashells, opalized wood, cephalopod shells, Arizona petrified woods and Colorado dinosaur bones. Shown are Eocene palm roots from Texas, preserved in opaline quartz; a late Jurassic ammonite, replaced by pyrite enough to show suture lines, from Germany; a cross-section of the trunk of a Permian tree fern, also from Germany; and a Jurassic conifer from Patagonia, with seeds that contain embryos.
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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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