Uncategorized
- Health & Medicine
Delaying Dementia
The limited success of attempts to treat Alzheimer's disease with several compounds that appear able to prevent the disorder suggests that the window for derailing the development of the illness may close years before cognitive decline becomes evident.
- Math
Counting on Fibonacci
Fibonacci numbers and their relationships can be visualized in terms of tilings.
- Physics
The Electron’s Other Charge: Workhorse of electricity shows its weak side
Although electrons are nonnuclear particles, they exert a feeble nuclear force on each other when they snuggle up close, a new experiment shows.
- Earth
It’s a Gas: Trees emit unknown volatile substances
The chemical reactions taking place just above a northern Michigan forest hint that trees there and elsewhere may be emitting highly reactive gaseous substances that scientists haven't yet identified or directly detected.
- Humans
Mouse Mourned: Yoda dies at age 4
An age-defying laboratory mouse known as Yoda died peacefully in his cage in Ann Arbor, Mich., on April 22, at the age of 4 years and 12 days.
- Health & Medicine
Unsettling Association: Dental X rays linked to low-birth-weight babies
Getting dental X rays while pregnant might increase a woman's risk of giving birth to a low-birth-weight baby.
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Your article suggests that somehow X rays caused low-birth-weight babies in women who had their teeth X-rayed during their pregnancies. Here is an alternative possibility: Perhaps unhealthy people are more likely to have low-birth-weight babies and bad teeth. Stephen WoodOrlando, FL. The article hypothesizes that the dental X-rays hitting the thyroid glands of pregnant women […]
- Earth
Harm from Plastic Additive Challenged: Early exposure shows no ill effects
Presumed exposure shortly after birth to a chemical ingredient in plastics shows no evidence of disrupting development in people, according to a small study of teens who, as newborns, received intensive medical care involving plastic hospital equipment.
- Archaeology
Stone Age Combustion: Fire use proposed at ancient Israeli site
A Stone Age site in Israel contains the oldest evidence of controlled fire use in Asia or Europe, from around 750,000 years ago, a research team reports.
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In this article Rus Hoelzel states, “One thing I want to make clear is that I think whale watching is a good thing.” He then states that the activity may just need “tighter regulations.” I feel that this argument isn’t valid. If whale watching is causing danger to the species, then it’s not good. Whales […]
- Animals
Din among the Orcas: Are whale watchers making too much noise?
Whale-watching boats may be making so much noise that killer whales off the coast of Washington have to change their calls to communicate over the racket.
- Tech
Injectable Medibots: Programmable DNA could diagnose and treat cancer
Researchers have created a miniature DNA computer that can detect cancer genes in a test tube and respond by releasing a drug.
