Uncategorized
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Vitamin A calibrates a heart clock, 24-7
Scientists have discovered a molecular clock that keeps the circulatory system in sync with the rest of the body, and they show it's regulated by vitamin A.
- Materials Science
Titanium dioxide hogs the spotlight
Researchers have created new coatings that break down toxins and keep mirrors from fogging when the materials are exposed to visible light.
- Earth
New type of hydrothermal vent looms large
The discovery of a new type of hydrothermal vent system on an undersea mountain in the Atlantic Ocean suggests that submarine hydrothermal activity may be much more widespread than previously thought.
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18959
It may help to understand where that “missing antimatter” is if we just look around us. A proton has a positive charge–the sum of the quark polarities. If the (negative) electrical charge resident on the proton is in a reverse-time continuum, we would see it as positive. The mass remains the same. Hence, we have […]
- Physics
Antimatter mystery transcends new data
The discovery of a disparity in decays of subatomic particles known as B mesons and anti-B mesons sheds light on how matter and antimatter differ but deepens the mystery of why matter predominates in the universe today.
- Anthropology
Earliest Ancestor Emerges in Africa
Scientists have found 5.2- to 5.8-million-year-old fossils in Ethiopia that represent the earliest known members of the human evolutionary family.
- Health & Medicine
Marijuana may boost heart attack risk
Marijuana seems to heighten the risk of heart attack in some people during the hour after which it is smoked.
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18958
The study in “Marijuana may boost heart attack risk” appears to be more about the effects of smoking and deep inhalation than a useful examination of the effects of tetrahydrocannabinol, which is what marijuana smokers seek. The report makes it sound as though this active ingredient is the cause of the marginal increase in heart […]
- Health & Medicine
Arthritis drug succeeds vs. psoriasis
People with the skin disorder psoriasis respond well to infliximab, a drug normally given to arthritis patients.
- Health & Medicine
Insulin shots fail to prevent diabetes
Insulin injections failed to prevent type I, or juvenile-onset, diabetes from developing in children and young adults predisposed to the disease.
- Health & Medicine
Does lack of sleep lead to diabetes?
Lack of sleep makes healthy adults somewhat resistant to the effects of the hormone insulin, suggesting it could predispose people toward type II, or adult-onset, diabetes.
- Earth
The Silence of the Bams
If a nuclear explosion were set off in a cavity of the right size and shape, even a moderate-sized nuclear bomb might appear at long distances to be no bigger than a routine explosion used in mining.
