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Wednesday December 16, 2009
From Anne Marie Helmenstine, Ph.D., Your Guide to Chemistry
There are some chemicals you touch every day (e.g., water), while others have no business anywhere near your skin. The chemicals on this list either are toxic and absorbed through healthy skin or they react vigorously with your skin or else they tend to detonate when poked.
mercury - heavy metal...
Wednesday December 16, 2009
From Shelley Esaak, Your Guide to Art History
Mark Podwal (American, b. 1945)
Pomegranates with Torah Shields, 2008
Acrylic, gouache and colored pencil on paper
7 3/4 x 12 1/8 in. (19.7 x 30.8 cm)
© Mark Podwal, 2008, courtesy of Forum Gallery, New York
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Wednesday December 16, 2009
From Regina Bailey, Your Guide to Biology
Shrouded Man's HairCredit: Prof. Shimon Gibson
Using DNA analysis techniques, researchers have discovered the earliest verified case of leprosy. The evidence was obtained from the discovery of the burial remains of a first century shrouded man near the Old City of Jerusalem. DNA analysis of the man's bones further...