The delayed rise of present-day mammals
...och, and appears to coincide with a peak in global temperatures known as the Cenozoic thermal maximum. However, the authors point out that the exact cause of the increased mammalian biodiversity will require further study. "Modern mammals went though an early period of diversification about 93 million years ago...Chemists create healthier pizza by boosting antioxidants in dough
... for some time that longer-baking times and higher temperatures can enhance the flavor of pizza. The new study sho...xidant properties. Longer baking times or higher temperatures generally corresponded to higher levels of antioxidants in comparison to less intense baking conditi...Microfossils unravel climate history of tropical Africa
...rely new method to reconstruct the history of land temperatures based on the molecular fossils of soil bacteria. T...e called 'proxies'. New method to measure soil temperatures Reconstructing continental temperature history is more difficult than for the oceans, because soil...Changing ocean conditions led to decline in Alaska's sea lion population
...ypothesis found that climate change affected water temperatures and ocean currents determining the abundance of available fish for the sea lions to eat. Changes in prey led to a decline in the sea lion population. Using interdisciplinary research methods was key in determining the root cause of the sea lion decl...ACS News Service Weekly PressPac -- March. 14, 2007
...nditions such as strong disinfectants and dry-heat temperatures of 1,100F that destroy other disease-causing agents and that prions can remain infectious in the soil for at least three years. Pedersen and colleagues investigated the effect of different conditions (pH, salinity) on the adsorption, or attachment, o...New agreement helps protect thousands of rice varieties -- the planet's most important food source
... and fireproof facility that must be maintained at temperatures as low as 19 degrees Celsius. At a special ceremony on the same day, the Institute also dedicated the Genetic Resources Center (GRC) to Dr. Te-Tzu Chang, the founder of the International Rice Germplasm Center one of the predecessors of the GRC. Dr...Microscopic sea creatures provide foundation for gas sensors and other devices
...on." Silicon is normally produced from silica at temperatures well above the silicon melting point (1,414 degrees Celsius), so that solid silicon replicas can not be directly produced from silica structures with such conventional processing. So the Georgia Tech researchers used a reaction based on magnesium ga...Press conferences at the year's largest physics meeting
...peratures, will report on efforts to push critical temperatures still higher. Finally, Douglas Scalapino (UC Santa Barbara) will compare the highly successful BCS theory that applies to low-temperature superconductors to their cuprate counterparts; the effort to create such a theory has been described by some as...Regardless of global warming, rising CO2 levels threaten marine life
...s in ocean chemistry that could result from higher temperatures and carbon-dioxide concentrations, the researchers used an Earth-system model called the Integrated Science Assessment Model. Developed by Jain and his graduate students, the model includes complex physical and chemical interactions among carbon-diox...Largest physics meeting of the year, in Denver
...quid helium temperatures, the prospect of critical temperatures above 100 Kelvin electrified scientists and the public alike. Speakers reporting fresh results on so-called high temperature superconductors (HTSC) went on until 3:15 am. (See some 1987 Woodstock pictures at www.aip.org/png .) Now, 20 years later,...Tundra disappearing at rapid rate
...n both Arctic and mountain environments. As global temperatures continue to increase, the treeline is expected to ...t, dry summersfollowed by successive years of warm temperatures favourable for seedling growth and survival," said Danby. Widespread changes to treelines could h...Corals that can fight global warming may one day help fragile reefs
...n a 12-degree temperature range. And rising global temperatures appear to be threatening their survival, according...zymatic defenses to fight lethal microorganisms as temperatures rise. These abilities may someday be harnessed to help protect other fragile coral reefs, Harvell sa...Antarctic marine explorers reveal first biological changes after collapse of polar ice shelves
...t consequence in the Antarctic Peninsula of rising temperatures is the slow decrease of sea ice and of the planktonic algae that grows underneath. These algae feeds krill, small shrimp-like creatures, and therefore represents the bottom rung on a marine food chain that eventually sustains the iconic large Antarc...AGU Journal highlights -- February 23, 2007
...Davis, Antarctica, and their relation to winds and temperatures Authors:Ray J. Morris, Damian J. Murphy and Andrew R. Klekociuk: Australian Government Antarctic Division, Kingston, Tasmania, Australia; David A. Holdsworth: Atmosphere Radar Systems, Thebarton, South Australia, Australia; also at Department of Ph...ACS News Service Weekly PressPac -- February 14, 2007
...of those bubbles causes intense local heating with temperatures estimated at 9,000 F, which is nearly as hot as the surface of the sun. The sonochemical process forms iron spheres around the carbon nanoparticles. On exposure to air, the iron rapidly oxidizes, which burns away the carbon core, leaving hematite sph...Scientists warn of climate change risk to marine turtles
...ists from the University of Exeter. An increase in temperatures of just one degree Celsius could completely elimin...temperature of eggs during incubation, with warmer temperatures producing females and cooler conditions producing males. Temperatures during nesting also need to be...AAAS releases video and first board consensus statement on climate change
...nges are being experienced in the far North, where temperatures have risen much more rapidly than the global average, according to Holdren, who serves as director of the Woods Hole Research Center and Teresa and John Heinz Professor of Environmental Policy at Harvard University. The plight of the 600 residents...US needs to plan for climate change-induced summer droughts
...e near future. There is a kind of domino effect as temperatures warm. Precipitation that would have fallen as snow...ration increases." During the last three decades, temperatures have risen 1-2 degrees (Fahrenheit) and many scientists believe the pace of that warming is accelera...Newly discovered West Coast arrhythmias cause
...ct salmon runs have recorded large swings in ocean temperatures at a much higher frequency than the past, a change...stal winds, which are in turn driven by changes in temperatures on land," says Lubchenco. Around the globe, areas of coastal upwelling which include the waters o...Antarctic warming to reduce animals at base of ecosystem, shift some penguin populations southward
...ne ecosystems respond dramatically to increases in temperatures along the Antarctic Peninsula," explained Berry Ly...a implies that there may be less food there as the temperatures rise," he said. He manages the LTER site in the Dry Valleys near McMurdo Station, the largest of ...