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Science Daily
Arctic Sea Ice Decline May Trigger Climate Change Cascade (View Original Story)
Source: sciencedaily.com Posted: 03-23-2007 at 12:00:45
| Arctic sea ice that has been dwindling for several decades may have reached a tipping point that could trigger a cascade of climate change reaching into Earth's temperate regions, says a new University of Colorado at Boulder study. |
Global December-February Temperature Warmest On Record (View Original Story)
Source: sciencedaily.com Posted: 03-23-2007 at 12:00:45
| NOAA reports that February's combined global land and ocean surface temperature was the sixth warmest on record, but a strong El Nino in January helped push the winter to its highest value since records began in 1880. |
New Biofuels Process Promises To Meet All US Transportation Needs (View Original Story)
Source: sciencedaily.com Posted: 03-23-2007 at 12:00:44
| Purdue University chemical engineers have proposed a new environmentally friendly process for producing liquid fuels from plant matter - or biomass - potentially available from agricultural and forest waste, providing all of the fuel needed for "the entire US transportation sector." |
Researchers Question Validity Of A 'Global Temperature' (View Original Story)
Source: sciencedaily.com Posted: 03-23-2007 at 12:00:44
| Discussions on global warming often refer to 'global temperature.' Yet the concept is thermodynamically as well as mathematically an impossibility, says Bjarne Andresen, a professor at The Niels Bohr Institute, University of Copenhagen, who has analyzed this topic in collaboration with professors Christopher Essex from University of Western Ontario and Ross McKitrick from University of Guelph, Canada. |
Shooting Marbles At 16,000 Miles Per Hour (View Original Story)
Source: sciencedaily.com Posted: 03-23-2007 at 12:00:44
| NASA scientist Bill Cooke is shooting marbles and he's playing "keepsies." The prize won't be another player's marbles, but knowledge that will help keep astronauts safe when America returns to the Moon in the next decade. Cooke is firing quarter-inch diameter clear shooters -- Pyrex glass, to be exact -- at soil rather than at other marbles. And he has to use a new one on each round because every 16,000 mph (7 km/s) shot destroys his shooter. |
More Efficient Wind Turbine Blade Designed (View Original Story)
Source: sciencedaily.com Posted: 03-23-2007 at 12:00:44
| A new wind turbine blade design that researchers at Sandia developed in partnership with Knight & Carver of San Diego should significantly reduce the cost-of-energy of wind turbines at low-wind-speed sites. Named "STAR" for Sweep Twist Adaptive Rotor, the blade is the first of its kind produced at a utility-grade size. |
Researcher Finds High Mercury Levels In Montana Osprey (View Original Story)
Source: sciencedaily.com Posted: 03-23-2007 at 12:00:44
| With the largest Superfund site in the USA in his proverbial backyard, University of Montana Research Assistant Professor Heiko Langner knew he had a great laboratory for examining the after effects of mining on local raptor populations. What he didn't expect was the lack of poisons everyone was worrying about and the presence of a particularly dangerous one that no one was looking for: mercury. |
IceSAR Campaign Provides Glimpse Of Future Sentinel-1 Images Over Ice (View Original Story)
Source: sciencedaily.com Posted: 03-23-2007 at 12:00:44
| It is perhaps fitting that at the beginning of the International Polar Year, an ambitious airborne campaign is now underway and realizing excellent results in the extreme north of Europe in support of ESA's Sentinel-1 mission -- which amongst other application areas will contribute to ice monitoring. |
First Greenhouse Gas Animations Produced Using New Envisat Data (View Original Story)
Source: sciencedaily.com Posted: 03-23-2007 at 12:00:44
| Based on three years of observations from the SCIAMACHY instrument aboard ESA's Envisat, scientists have produced the first movies showing the global distribution of the most important greenhouse gases -- carbon dioxide and methane -- that contribute to global warming. |
Prehistoric Hurricane Activity Uncovered (View Original Story)
Source: sciencedaily.com Posted: 03-23-2007 at 12:00:44
| Hurricanes Katrina and Rita focused the international spotlight on the vulnerability of the US coastline. Fears that a "super-hurricane" could make a direct hit on a major city and cause even more staggering losses of life, land and economy triggered an outpouring of studies directed at every facet of this ferocious weather phenomenon. Now, an LSU professor takes us one step closer to predicting the future by drilling holes into the past. |
Researchers To Determine Why Oil Still Remains From Exxon Valdez Disaster (View Original Story)
Source: sciencedaily.com Posted: 03-23-2007 at 12:00:44
| Some 18 years after the Exxon Valdez ran aground and spilled nearly 11 million gallons of crude oil into Alaska's Prince William Sound, the oil continues to cause environmental problems along some of Alaska's shoreline. To help determine why the oil continues to linger long after experts predicted it would disappear, Temple University has been awarded a three-year, $1.2 million grant by the Exxon Valdez Oil Spill Trustee Council. |
Going Nowhere Fast: Top Rivers Face Mounting Threats (View Original Story)
Source: sciencedaily.com Posted: 03-23-2007 at 12:00:44
| Rivers on every continent are drying out, threatening severe water shortages, according to a new WWF report. The report, World's Top Rivers at Risk, released ahead of World Water Day (22 March), lists the top ten rivers that are fast dying as a result of climate change, pollution and dams. |
Solar Blast From The Past Dwarfed Modern Ozone Destruction (View Original Story)
Source: sciencedaily.com Posted: 03-23-2007 at 12:00:44
| A burst of protons from the Sun in 1859 destroyed several times more ozone in Earth's atmosphere than did a 1989 solar flare that was the strongest ever monitored by satellite, a new analysis finds. |
Mineral Physics Illuminates Lower Mantle Hypothesis (View Original Story)
Source: sciencedaily.com Posted: 03-23-2007 at 12:00:44
| Scientists have shown increased interest in a mantle layer known as D", presumed to be just above the core-mantle boundary, since laboratory experiments in 2004 revealed a possible new high-temperature, high-pressure, crystal packing structure derived from the common mantle mineral perovskite. |
The Next Great Earthquake (View Original Story)
Source: sciencedaily.com Posted: 03-23-2007 at 12:00:44
| The 2004 Sumatra-Andaman earthquake and resulting tsunami are now infamous for the damage they caused, but at the time many scientists believed this area was unlikely to create a quake of such magnitude. Scientists now urge the public and policy makers to consider all subduction-type tectonic boundaries to be "locked, loaded and dangerous." |
The Next Great Earthquake (View Original Story)
Source: sciencedaily.com Posted: 03-22-2007 at 06:00:31
| The 2004 Sumatra-Andaman earthquake and resulting tsunami are now infamous for the damage they caused, but at the time many scientists believed this area was unlikely to create a quake of such magnitude. Scientists now urge the public and policy makers to consider all subduction-type tectonic boundaries to be "locked, loaded and dangerous." |
Global Warming Could Be Reversing A Trend That Led To Bigger Human Brains (View Original Story)
Source: sciencedaily.com Posted: 03-22-2007 at 03:00:26
| Early humans developed larger brains as they adapted to colder climates, according to University at Albany researchers. |
Solar Blast From The Past Dwarfed Modern Ozone Destruction (View Original Story)
Source: sciencedaily.com Posted: 03-22-2007 at 12:00:42
| A burst of protons from the Sun in 1859 destroyed several times more ozone in Earth's atmosphere than did a 1989 solar flare that was the strongest ever monitored by satellite, a new analysis finds. |
Deep-diving West Coast Plate May Have Triggered Massive Central U.S. Quake (View Original Story)
Source: sciencedaily.com Posted: 03-22-2007 at 12:00:42
| Scientists studying extraordinary earthquakes in the central U.S. in 1811-12 along the New Madrid seismic zone have revealed a possible new driving mechanism for intraplate seismicity. |
Dry Winters In North Mediterranean Stoke Hot European Summers (View Original Story)
Source: sciencedaily.com Posted: 03-22-2007 at 12:00:42
| Shortages of winter rainfall over southern Europe precede hot summers further north on the continent, a new study shows. |
Lake Superior Summer Temperatures Rising Faster Than Regional Air Temperatures (View Original Story)
Source: sciencedaily.com Posted: 03-22-2007 at 12:00:42
| A new analysis of data from buoys, weather stations, and historical ice records indicates that summer surface temperatures of Lake Superior have increased approximately 2.5 degrees C since 1979, roughly twice the rate of regional atmospheric warming. |
Whatever The Warming, Ocean Acidifies From Carbon-dioxide Buildup (View Original Story)
Source: sciencedaily.com Posted: 03-22-2007 at 12:00:42
| A new study indicates that future changes in ocean acidification caused by atmospheric carbon dioxide emissions are largely independent of the amount of climate change caused by those emissions. |
Mineral Physics Illuminates Lower Mantle Hypothesis (View Original Story)
Source: sciencedaily.com Posted: 03-22-2007 at 12:00:42
| Scientists have shown increased interest in a mantle layer known as D", presumed to be just above the core-mantle boundary, since laboratory experiments in 2004 revealed a possible new high-temperature, high-pressure, crystal packing structure derived from the common mantle mineral perovskite. |
Volcanic Plumbing Dictates Development Of Deep-sea Hydrothermal Vents (View Original Story)
Source: sciencedaily.com Posted: 03-22-2007 at 12:00:42
| After years of results that repeatedly dogged him, University of Oregon geologist Douglas R. Toomey decided to follow the trail of data surfacing from the Pacific Ocean. In doing so, he and his collaborators may have altered long-held assumptions involving plate tectonics on the ocean floor. |
Substantial Amount Of Mercury Entering The Ocean Through Groundwater (View Original Story)
Source: sciencedaily.com Posted: 03-22-2007 at 09:00:31
| Researchers from the Woods Hole Oceanographic Institution have found a new and substantial pathway for mercury pollution flowing into coastal waters. Marine chemists have detected much more dissolved mercury entering the ocean through groundwater than from atmospheric and river sources. |
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