A new study of the High Arctic climate roughly 50 million years ago led by the University of Colorado at Boulder helps to explain how ancient alligators and giant tortoises were able to thrive on Ellesmere Island well above the Arctic Circle, even as they endured six months of darkness each year.
The National Science Foundation (NSF) is an independent federal agency that supports fundamental research and education across all fields of science and engineering. In fiscal year (FY) 2010, its budget is about $6.9 billion. NSF funds reach all 50 states through grants to nearly 2,000 universities and institutions. Each year, NSF receives over 45,000 competitive requests for fu
The National Geographic's Ocean Education Program aims to engage and collaborate with the marine recreation community with a shared goal of raising public awareness about ocean conservation and inspiring people to help protect the vital natural resources that the ocean provides.
Among teens in the USA, the percentage who have had sexual i
tercourse or say they'd be pleased if they or their partner were to get pregnant hasn't changed much since early in the decade, and there appears to be a growing acceptance of having babies outside marriage, a government report
said Wednesday.
From 1995 to 2002, "it was pretty much across-the-board improvements in those risk factors," says lead author Joyce Abma, a statistician at the Centers for Disease Control and Prevention's National Center for Health Statistics. "It is a source of concern to see that forward movement kind of stalling
Based on in-person interviews with 1,381 girls and 1,386 boys ages 15 to 19 in 2006-2008, more than four in 10 never-married teens in the USA have had intercourse at least once, Abma and her co-authors estimate. That's a slight drop from 2002, the last time the National Survey of Family Growth was conducted, but it was not statistically significan
Chlamydia is the most frequently reported bacterial sexually
transmitted disease in the United States. In 2008, 1,210,523 chlamydial infections were reported to CDC from 50
states and the District of Columbia. Under-reporting is substantial
because most people with chlamydia are not aware of their infections
and do not seek testing. Also, testing is not often done if patients
are treated for their symptoms. An estimated 2,291,000 non-institutionalized
U.S. civilians ages 14-39 are infected with C. trachomatis based on the
U.S. National Health and Nutrition Examination Survey. Women
are frequently re-infected if their sex partners are not tre
Chlamydia is known as a "silent" disease because the
majority of infected people have no symptoms.
If symptoms do occur, they usually appear within 1 to 3 weeks after
exposure.
To help prevent the serious consequences of chlamydia, screening at
least annually for chlamydia is recommended for all sexually active
women age 25 years and younger. An annual screening test also is recommended
for older women with risk factors for chlamydia (a new sex partner
or multiple sex partners). All pregnant women should have a screening
test for chlamydia.
The national institute on deafness and communication disorders gives me decibel levels of everyday things people might hear. It gives what decibel levels are safe and which ones are dangerous.
The average surface temperature of earth has increased more than 1 degree Fahrenheit since 1900 and the rate of warming has been nearly three times the century-long average since 1970. Almost all experts studying the recent climate history of the earth agree now that human activities, mainly the release of heat-trapping gases from smokestacks, tailpipes, and burning forests, are probably the dominant force driving the trend.
This video talks about how red eyed frogs stand their grounds. How they shake their butts in order to scare off their opponents, It is a way that they communicate with one another. They tend to do it to show they are marking their spots