Uncategorized
- Health & Medicine
Bone scan reveals estrogen effects
Using a scanning technology called microcomputerized tomography, scientists have a new way to look at the difference between bone exposed to estrogen and bone deprived of it.
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19167
Just because chemical equipment can measure parts per trillion doesn’t necessarily mean that they have any biological significance. If you took one pill of Tylenol and dissolved in an olympic-size swimming pool, that would roughly be 1 part per billion. One part per trillion would be one pill in 1,000 swimming pools. My point is […]
- Humans
From the June 14, 1930, issue
1,500,000,000 YEARS OF LIFE PORTRAYED IN GREAT HALL OF PAINTINGS Fifteen hundred million years of life on this planet will be unrolled as a single connected epic in a series of three majestic new halls planned for the Field Museum of Natural History in Chicago.
