Word: pollens
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...that scientists needed to test a large sample of paint to pinpoint its age. And, says anthropologist Margaret Conkey, "no one was willing to scrape a bison's rump off the wall." Now it takes only a tiny sample. French prehistory expert Arlette Leroi-Gourhan estimates dates by using pollen particles preserved on cave floors...
While many Mayanists agree that wars contributed to the collapse, no one thinks they were the whole story. Another factor was overexploitation of the rain-forest ecosystem, on which the Maya depended for food. University of Arizona archaeologist T. Patrick Culbert says pollen recovered from underground debris shows clearly that "there was almost no tropical forest left...
...Demarest is turning his attention to garbage piles. "Those are the most important finds," he says, "not the tombs, because you find everything they ate, their tools -- a real cross-section of life, in really good preservation." A colleague plans to study the chemical composition of ancient soil and pollen samples and exhumed human bones to learn more about the Maya diet, common diseases, agricultural practices and even what the climate was like...
Doctors and pharmaceutical companies utilize several options to combat annoying symptoms associated with spring-time pollen...
...dependency arises when patients stop using the sprays, vessels become dilated, causing more pollen than before to come in contact with IgE. This produces a reaction more violent than if no spray had been used...