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The Bad Seed
Researchers are racing to identify tumor-forming stem cells in skin, lung, pancreatic, and many other cancers.
- Earth
Smoking out a source of painful menses
Breathing in secondhand smoke may contribute to the development of menstrual cramps.
- Earth
Allergic to computing?
The plastic cases of certain computer monitors emit a chemical—triphenyl phosphate—that can cause allergic reactions.
- Health & Medicine
Immune response in brain sparks nausea
Ailments ranging from the common cold to many types of cancer can make people nauseous, an effect that may occur because signals from the brain suppress the muscle contractions required for digestion.
- Health & Medicine
Cell therapy not just for Parkinson’s
Transplanted nerve cells can survive in the brains of people who have suffered strokes and may alleviate some brain damage.
- Health & Medicine
Making scents of Alzheimer’s
Among people with mild symptoms of memory loss, a limited ability to recognize smells—along with an inability to detect the disability—has been linked to the future development of Alzheimer's.
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19392
Your article describes how the male bean weevil’s spiked reproductive part damages the female’s reproductive tract to reduce the chance that she will mate with other males. Could this also explain the barbs on the organ of the domesticated tom cat? I have read that the pain of copulation induces the female’s ovulation, but I […]
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Bean weevils get a kick out of mates
Breeding in stored grain throughout the tropics, bean weevils represent an unusually clear example of the evolutionary male-female arms race.
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Squirrels save for the family’s future
Some female red squirrels hoard extra food for youngsters that haven't yet been conceived.
- Astronomy
Nudging asteroid fragments toward Earth
New computer simulations detail how fragments of asteroids travel to Earth and rain down as meteorites.
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19391
The article about tuberculosis states that Robert Koch in 1882 was the first person to link a particular microbe to a disease. References indicate that Armauer Hansen demonstrated in 1868 that Mycobacterium leprae was associated with the tissues of leprosy patients. He may not have had Koch’s postulates to prove this linkage, but many credit […]
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