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![]() Hundreds of stretches of DNA may be so critical to life's machinery that they have been "ultra-conserved" throughout hundreds of millions of years of evolution. Researchers have found precisely the same sequences in the genomes of humans, rats, and mice; sequences that are 95 to 99 percent identical to these can be found in the chicken and dog genomes, as well. UFOs, Abductions, And Ancient Astronauts ![]() I believe that life exists beyond the Earth. I believe that intelligent life must exist somewhere in the vast universe of stars and galaxies. I recognize that there is, as yet, no evidence to support this belief of mine. |
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Supercontinent's Breakup Plunged Ancient Earth Into Big Chill![]() The breakup of the world's original supercontinent, coupled with the breakdown of massive amounts of volcanic rock, plunged Earth into the deepest freeze it has ever experienced, new research shows. NASA Arctic Sea Ice Study May Stir Up Climate Models ![]() Contrary to historical observations, sea ice in the high Arctic undergoes very small, back and forth movements twice a day, even in the dead of winter. It was once believed ice deformation at such a scale was almost non-existent. Ancient Pebbles Provide New Details About Primeval Atmosphere ![]() Analysis of 3.2-billion-year-old pebbles has yielded perhaps the oldest geological evidence of Earth's ancient atmosphere and climate. The findings, published in the April 15 issue of the journal Nature, indicate that carbon dioxide levels in the early atmosphere were substantially above those that exist today and above those predicted by other models of the early Earth. New Clues To Origin Of Life ![]() A new discovery of microbial activity in 3.5 billion-year-old volcanic rock and one of earth's earliest signs of geological existence sheds new light on the antiquity of life, says University of Alberta researchers who are part of a team that made the groundbreaking finding. Multinational Team of Scientists Finds Early Life in Volcanic Lava ![]() Scientists from the United States, Norway, Canada, and South Africa have identified what is believed to be evidence of one of Earth's earliest forms of life, a finding that could factor heavily into discussions of the origins of life. Terra Takes Earth's Temperature ![]() Like thermometers in space satellites are taking the temperature of the Earth's surface or skin. According to scientists, the satellite data confirms the Earth has had an increasing "fever" for decades. Arctic Carbon A Potential Wild Card In Climate Change Scenarios ![]() The Arctic Ocean receives about 10 percent of Earth's river water and with it some 25 teragrams [28 million tons] per year of dissolved organic carbon that had been held in far northern bogs and other soils. |
When Did Bacteria Appear?![]() The bacteria family tree may be facing some changes due to the recent work of an evolutionary biologist at Washington University in St. Louis. And that may change our understanding of when bacteria and oxygen first appeared on earth. Making A Friendlier Mosquito ![]() Genetically modified mosquitoes that cannot transmit malaria are one hope for battling the disease that still kills over one million people a year. But that plan faces some serious snags, according to UC Davis researchers who are suggesting an alternative strategy. A Blueprint For US National Ocean Policy For The 21st Century ![]() Calling on Congress and President Bush to establish a new national ocean policy that balances use with sustainability, is based on sound science and educational excellence, and moves toward an ecosystem-based management approach is the centerpiece of the Preliminary Report released today by the U.S. Commission on Ocean Policy. Moss Landing Researchers Reveal Iron As Key To Climate Change ![]() A remarkable expedition to the waters of Antarctica reveals that iron supply to the Southern Ocean may have controlled Earth's climate during past ice ages. A multi-institutional group of scientists, led by Dr. Kenneth Coale of Moss Landing Marine Laboratories (MLML) and Dr. Ken Johnson of the Monterey Bay Aquarium Research Institute (MBARI), fertilized two key areas of the Southern Ocean with trace amounts of iron. Ocean Fertilization With Iron To Foster Carbon Dioxide Eating Plankton ![]() Dumping iron in the ocean is known to spur the growth of plankton that remove carbon dioxide, a greenhouse gas, from the atmosphere, but a new study indicates iron fertilization may not be the quick fix to climate problems that some had hoped. No-Till Farming Offers A Quick Fix To Host Of Global Problems ![]() Increase no-till farming practices across the planet or face serious climate, soil quality and food production problems in the next 20 to 50 years. That warning from scientists appeared in the journal Science this week. UC Riverside Researchers Improve Drought Tolerance in Plants ![]() Researchers from University of California at Riverside have reported the development of technology that increases crop drought tolerance by decreasing the amount of an enzyme that is responsible for recycling vitamin C. |
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