From the December 1999 Scientific American Magazine | 0 comments
By Rodger Doyle
DecemberOnly 67 percent of American women aged 35 to 44 were legally married as of 1998. This contrasts with 81 percent in the period 1890¿1940, before the
unusually high marriage levels of the baby boom years. This trend--it is more or less paralleled by other countries on the map, with the exception of
Is a pregnant woman's chance of giving birth to a boy 50 percent?
Most unbred animals (English sparrows, for example) all look alike to
me. People, of course, not so. Do I just not recognize the traits that
distinguish one animal from another, or do they really lack the
individual distinctiveness of humans?
Ubiquitous Chemical Associated with Abnormal Human Reproductive Development
Study Suggests Predators Are Vital to Health of Ecosystems
Adapting to the Freshwater CrisisForward-thinking experts are getting a better handle on the growing global water shortage and coming up with innovative approaches to ensuring the security, safety and sustainability of this resource
Why do human testicles hang like that?
Researchers Try to Solve the Mystery of HIV Carriers Who Don't Contract AIDS
Getting It Wrong: Surprising Tips on How to Learn
Secrets of the Phallus: Why Is the Penis Shaped Like That?
Skate punk'd: Taxonomic "oops" put rare fish species in danger of extinction
Fight to protect California condors from lead ammunition moves to Arizona
Circulation of LHC Beams Could Resume in Earnest over the Weekend
Measuring Up: New NIST Director, Plus Big Budget Put Measurement Science in Public Eye
How Long Can a Nuclear Reactor Last?
What to Do About Endocrine Disruptors? A Q&A with Linda Birnbaum
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