Duke Geologists Explore Alternative Way To Measure Ice Age Sea Bottom Temperatures
...cycles as well as with known shifts in the Earth's orbit that are suspected to drive the glacial cycles. "What Gary is trying to understand is how deep ocean circulation drives climate change," said Duke geology professor Paul Baker, another author of the Science paper and a supervising geochemist. "The te...NCAR Scientist Models Earth's Climate and Vegetation Patterns At Last Glacial Peak
...motion around the tilted axis), and its elliptical orbit around the sun. The cold temperatures of the last glacial maximum resulted from the existence of the continental ice sheets and were intensified by reduced amounts of atmospheric carbon dioxide, which insulates the earth by trapping heat reflected fr...Stronger Evidence That Global Climate Change Can Reduce The Variety Of Life
...echanges that were caused by cycles of the Earth's orbit relative to thesun. The astronomical or orbital theory of climate holds that changes inthe seasonal and geographical distribution of the sun's energy reaching theupper atmosphere strongly influence Earth's climate over tens of thousandsof years. Tod...Duke Studies Show U.S. Central Plains Vulnerable To Global Warming
...wobble and tilt in Earth's spin and changes in its orbit around the sun. In another paper prepared for the ESA, Clark and graduate student PhilipCamill reported on the expected effects of global warming on peatlands inpermafrost regions of Earth's northern latitudes. Scientists have theoriz...National Science Foundation Is Taking Small Business Into A New Phase Of Innovation
...ill play an essential role in collecting data from orbit in futurestudies of long term climate change on Earth as well as on solar magnetic stormsand for new advances in the earth sciences. The helium cell of the laser magnetometer has a resonance frequency proportionalto the size of the magnetic field th...Glenn To Perform Purdue Soybean Experiment In Space
.... senator who in 1962 became the first American to orbit the earth, will perform an experiment designed by Vierling to assess the ability of pathogens to incorporate foreign DNA into soybeans in microgravity. The experiment is a modification of a technique that is successfully used on earth. "How many peop...Eight Alabama Researchers Receive NASA Biotechnology Grants
...ional Space Station. Currently being assembled in orbit by SpaceShuttle crews, the Space Station will be an orbiting laboratory built, workedand lived on by 15 cooperating nations. The orbiting laboratory is scheduled tobe completed by mid-2002. Microgravity experiments are scheduled to begin bymid-1999...Tipsheet: Environmental Story Ideas
...Observing Satellites (EOS) will sweep into a polar orbit 900 miles above theEarth. Aboard will be MODIS, the Moderate-Resolution Imaging Spectroradiometer,a device whose capabilities are now being tested at UW-Madison's Space Scienceand Engineering Center. MODIS will enable scientists to study such things ......tion wasinitiated by subtle changes in the Earth's orbit and strongly amplified byresulting atmospheric and...at of today was initiatedby changes in the Earth's orbit and the tilt of Earth's axis. Some 9,000 yearsago, Earth's tilt was 24.14 degrees, as compared with ...New UNC-CH study explains variations in onset of ice ages
... "The earth circles the sun every year in an orbit that becomes eithermore elliptical or less ellipti... thousands of years," Rial says."Variations in the orbit over time chiefly account for the ice ages as differingamounts of sunlight warm the planet." ...UW professor's climate change theory leads to NASA mission
...s the satellite will travel in a north-south polar orbit 435 mileshigh, making repetitive passes and consta...on while theEarth spins below. The sun-synchronous orbit means the spacecraft will cross theequator alternately around noon and midnight, collecting data bot...Human stem cell research leads Science's top ten list of the best scientific advances in 1999
...test batch of exoplanets even contains worlds that orbit in the habitable zone of their parent stars, where liquid water and life could exist. While none of the planets discovered so far actually has what it takes to support life, theorists think that the universe should be teeming with more planets that a......ing collisions with comets and asteroids. A stable orbit unperturbed by giant planets. A large moon at the right distance to stabilize tilt, thus ensuring seasonal climate fluctuations that are not too severe. Enough carbon to support development of life but not so much to allow for runaway greenhouse cond......best place to launch satellites into geostationary orbit above the equator. The European Space Agency's spaceport is in nearby French Guiana. From Guyana, the launch route eastwards will be over open ocean in case of mishaps. Beal plans to buy, then partially drain, 100 square kilometres of swamp on the ...... in 1989, is a 2000-kilometre-wide solar shield in orbit about 1.5 million kilometres from Earth. The satel..., you could inject small particles into near-Earth orbit or the upper atmosphere. Sulphur dioxide, for example, is belched out by volcanoes and already natur...Genetically modified earth plants will glow from Mars
...e. In 1999, Ferl sent 40 reporter-gene plants into orbit aboard the space shuttle. On that flight, gravity had an adverse effect on the plants' ability to utilize water, a condition called "space adaptation syndrome." The scientists are using that experience to engineer smarter plants. "Just like humans,...First experiments from NASA Commercial Space Centers get started on International Space Station
...ce experiments. The experiments were launched into orbit on April 19 on the Space Shuttle Endeavor on the STS-100 mission, Space Station Flight 6A. The Space Station Expedition Two crew are setting up the three commercial payloads and beginning experiments. These experiments will remain on board the Statio...NASA helps conservation biologists get the big picture
...ia, and colleagues. --using astronauts' low Earth orbit photographs to identify woodlands damaged by the growing elephant population in Botswana's Chobe National Park. Nearly 400,000 photographs taken by astronauts since the late 1960s are available in a searchable database at http://eol.jsc.nasa.gov/ss...Studying plant adaptation to arctic helps understand the 'steps of wisdom of life'
...he solar system to see which will come near Earths orbit in the next 50 years," he said. "The planet would be entirely different after than before an extinction." With model plants, the scientists also can develop ecological models of carbon cycling. Scheckler is looking at land when forests first appear......on levels associated with spaceflight in low Earth orbit or deep space preclude pregnancies at this time. The National Council on Radiation Protection and Measurements guidelines limit radiation exposure to 500 mrem for an entire pregnancy and to only 50 mrem per month. The International Commission on Radi...