Washington Post Environmental reporter Juliet Eilperin will be online to discuss the latest developments at the United Nations Framework Convention on Climate Change.
Measurements taken by the Japanese spacecraft Hinode have confirmed that the winds, reaching speeds of 2 million mph, that blow across the face of the sun are powered by magnetic waves first proposed decades ago by a Swedish scientist. Using a 20-inch optical telescope, an X-ray telescope and a...
Washington Post staff writer Marc Kaufman was online to discuss whether the human body is capable of living in space for long periods of time without suffering serious damage.
Infectious-disease expert David N. Gilbert was making rounds at the Providence Portland Medical Center in Oregon in April when he realized that an unusual number of patients, including young, vigorous adults, were being hit by a frightening pneumonia.
With NASA now actively planning for the day when astronauts will live for months on the moon or make the years-long flight to Mars and back, a potentially troublesome question is being raised with increasing urgency: Is the human body -- even a well-protected human body -- capable of living in space...
Atrazine, the second most widely used weedkiller in the country, is showing up in some streams and rivers at levels high enough to potentially harm amphibians, fish and aquatic ecosystems, according to the findings of an extensive Environmental Protection Agency database that has not been made...
Physicians are among the most trusted professionals in America, but a new survey shows that when it comes to dealing with colleagues' mistakes or incompetence, many doctors abandon the high standards they espouse.
Sometime next year, developers will boot up the next generation of supercomputers, machines whose vast increases in processing power will accelerate the transformation of the scientific method, experts say.
A high school student hunting fossils in the badlands of his native North Dakota discovered an extremely rare mummified dinosaur that includes not just bones but also seldom seen fossilized soft tissue such as skin and muscles, scientists will announce today.
An ancient flood that is likely to have inspired the biblical story of Noah's ark forced large numbers of the world's early farmers out of the Mediterranean and Black Sea regions and into Western Europe, where they displaced hunter-gatherers and established agriculture across the continent.
After years of delays, NASA hopes to launch this week a European-built laboratory that will greatly expand the research capability of the international space station. Although some call it a milestone, the launch has focused new attention on the space agency's earlier decision to back out of plans...
An expert panel of the nation's premier science advisory organization yesterday gave a failing grade to a federal risk analysis used to justify construction of a controversial high-security bioterror laboratory in inner-city Boston.
After concluding that a Bush administration appointee "may have improperly influenced" several rulings on whether to protect imperiled species under the Endangered Species Act, the Fish and Wildlife Service has revised seven decisions on protecting species across the country.
For those who find the vast array of high-tech hardware that fills the National Air and Space Museum overwhelming -- not to mention the constant hordes that fill the cavernous expanse -- a more serene and equally informative scientific experience is available less than a mile away at the largely...
