Uncategorized
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Breeds Apart: Purebred dogs defined by DNA differences
The most thorough DNA analysis yet of purebred dogs suggests that canine breeds can also be discerned genetically with great accuracy.
- Plants
Wind Highways: Mosses, lichens travel along aerial paths
Invisible freeways of wind may account for the similarity of plant species on islands that lie thousands of kilometers apart.
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It seems to me that the stronger the social pressure against using marijuana in a culture, the more likely it will be that those who use it will be troubled, antisocial, or unusually independent. Hence, any increase in the incidence of mental problems after using marijuana could be attributed to an increased likelihood that those […]
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Pot on the Spot: Marijuana’s risks become blurrier
A research review challenges the assumption that scientists have demonstrated a causal link between teenage marijuana use and later psychological and behavioral problems.
