Uncategorized
- Anthropology
Reservoirs of Evolution: Rainy periods linked to human origins in Africa
Three phases of heavy rainfall in eastern Africa between 2.7 million and 900,000 years ago created deep lakes and might have played a critical role in the evolution of human ancestors.
- Health & Medicine
Outwitting TB: Enhanced vaccine protects mice in lab tests
An enhanced vaccine appears to offer better protection against tuberculosis than the current version does, a study in mice suggests.
- Materials Science
Fine Fabric: New, fast way to make sheets of nanotubes
Scientists have come up with a way to efficiently produce thin, transparent sheets of carbon nanotubes that are several meters long.
- Earth
Inhaling salt raises blood pressure
People who work in environments where large amounts of salt particles hang in the air may literally breathe their way to high blood pressure.
- Health & Medicine
Tracking busy genes to get at cancer
By identifying which genes are overactive in certain breast tumors, researchers have discovered a genetic signature that could help doctors predict if and when a woman's cancer might spread to her lungs.
- Tech
Roughing up counterfeiters
A new anticounterfeiting scheme generates unique, reproducible identity codes that could be used to authenticate passports, credit cards, and other items on the basis of inherent, microscopic irregularities in the items' surfaces.
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- Health & Medicine
Potent Medicine
Drugs now used to treat erectile dysfunction might soon assume multiple roles in managing heart disease and other conditions, including some that affect women and infants.
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I wonder if any of the researchers had a pet bird. My Alexandrine parakeet can smell beer or ice cream from two rooms away—She screams for her share. Bruce DowRidge Manor, Fla.
- Animals
Myth of the Bad-Nose Birds
Even though a lot of people still believe birds have no sense of smell, certain species rely on their noses for important jobs, such as finding food and shelter, and maybe even a mate.
- Math
Strange Orbits
Orbiting bodies can follow weird trajectories, from figure-eight loops to complex, interlocked paths.
- Humans
From the August 10, 1935, issue
A silencer for artificial lightning, a trigger for epilepsy, and light that keeps plants from growing.
