Monday, December 1, 2008

Science, environment and health news from the L.A. Times

The Science Files

Science, Health and Environment

Monday, December 1, 2008

The prospect of bold government action appears to be accepted among players across the ideological and political spectrum, including those who opposed the idea in the 1990s. >>

The number of spotted owls in the Pacific Northwest is dwindling. Some experts think an aggressive owl cousin, not logging, is to blame. >>

Elephant exhibit underway at L.A. Zoo raising a ruckus
A city councilman and animal welfare advocates worry the 3.6-acre 'Pachyderm Forest' won't provide enough space and are concerned about overall care. Zoo officials say they're mimicking the wild. >>

Space shuttle Endeavour lands at Edwards Air Force Base
The craft is rerouted from Cape Canaveral, Fla., because of bad weather. Its two sonic booms startle some L.A. County residents. >>

The ship hit a reef off the Turks and Caicos Islands in 1841, freeing the 193 Africans aboard, researchers say. >>

Their longevity surprises manufacturers but is bad for business. Upon retirement, they join the mass of space junk. >>

Stress reduction: Why you need to get a grip and how
It damages the body, contributing to heart disease, diabetes and more. In these economic times, it's also a fact of life. Here's how to protect yourself. >>

What methods don't work to reduce stress
Aromatherapy and drinking may offer some relief, but they don't help the immune system deal with pressure. >>

Stress explained
Stress is what a person perceives as a threat, says Sarah Speck, a preventive cardiologist, and medical director of the Center for CardioVascular Wellness at Swedish Medical Center in Seattle. When the brain senses a threat -- even if it's a non-physically threatening one, such as a manuscript deadline or a dwindling bank account -- it tells the body to release adrenaline and noradrenaline, the fight or flight hormones. Initially, these hormones create a surge of blood to the heart and brain, which is why we get a rapid heart beat. But in the aftermath of that surge, stress hormones constrict blood vessels, which reduce the amount of oxygen getting to the heart. That makes the heart work harder, raises blood pressure, and can cause angina and chest pain. >>

Kent Garcia, in pain and under duress, was at his breaking point until he gave meditation a try. Now, he's healthier and happier. >>

Ways to relieve stress
When things get to be too much, exercise, sleep, deep breathing or going out can help, experts say. >>

Dr. John H. Menkes, the pediatric neurologist who identified Menkes disease, maple syrup urine disease and other congenital disorders of the neural system and established the pediatric neurology program at UCLA, died Nov. 22 at Cedars-Sinai Medical Center in Los Angeles of complications of cancer. He was 79. >>



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