Early hominids first walked on two legs in woods, not on open grasslandsOctober 9th, 2009 WASHINGTON - In a new research, scientists have determined that early hominids first walked on two legs in the woods, not on the open, grassy savanna. University of Illinois anthropology professor Stanley Ambrose and his team carried out the research.
Climate change mitigation strategies ignore carbon cycling processes of inland watersSeptember 2nd, 2009 WASHINGTON - In a new research, scientists have said that current international strategies to mitigate manmade carbon emissions and address climate change have overlooked the carbon cycling processes of inland waters. The research was carried out by scientists from the University of Vienna, Uppsala University in Sweden, University of Antwerp, and the US based Stroud Water Research Center.
Medical isotopes, used in 40,000 US procedures daily, are in short supplyAugust 14th, 2009 Medical isotope shortage threatens treatmentsALBUQUERQUE, N.M. — The shutdown of a nuclear reactor in Canada has caused a shortage of a radioactive isotope used to detect cancers and heart disease.
Some early Europeans consistently consumed fish 40,000 years agoAugust 12th, 2009 WASHINGTON - In a new study, scientists have determined that at least some of the European early modern humans consistently consumed fish 40,000 years ago, supplementing their diet of terrestrial animals. The study was carried out by Erik Trinkaus, professor of anthropology at Washington University in St.
Iron isotopes can be used as a tool in oceanographyAugust 2nd, 2009 WASHINGTON - A new research, involving scientists from the National Oceanography Centre, Southampton (NOCS), has highlighted the potential utility of iron isotopes for addressing important questions in ocean science. Pore-fluid iron isotope measurements have so far been restricted to the continental shelves where the supply of carbon is typically high and dissimilatory iron reduction is extensive, precluding comparisons with low-carbon, deep-water environments.
Carbon deposits in Arctic could worsen climate changeJuly 6th, 2009 TORONTO - Vast amounts of carbon, about twice as much as contained in the atmosphere, is stored in the Arctic, according to a new study. The amount of carbon in frozen soils, sediments and river deltas raises new concerns over the role of the northern regions as future sources of greenhouse gases.
Radioactive isotope in ice core record reflects solar activity over 600 yearsJuly 4th, 2009 WASHINGTON - Scientists have analyzed Beryllium-10, a radioactive isotope, found from the NGRIP ice core, Greenland, which reflects solar activity over the past 600 years. Beryllium-10, a radioactive isotope, is produced in cosmic ray showers.
Stellar family in crowded and violent neighbourhood is surprisingly normalJune 5th, 2009 MUNICH - Astronomers have found that a stellar family near a supermassive black hole at the heart of the Milky Way, is surprisingly normal. Using ESO's Very Large Telescope, astronomers have obtained one of the sharpest views ever of the Arches Cluster - an extraordinary dense cluster of young stars near the supermassive black hole.
Humans are disrupting the nitrogen cycle, say scientistsJune 5th, 2009 WASHINGTON - In a new research, scientists have determined that humans are disrupting the nitrogen cycle by altering the amount of nitrogen that is stored in the biosphere. The chief culprit for disruption in the nitrogen cycle is fossil fuel combustion, which releases nitric oxides into the air that combine with other elements to form smog and acid rain.
Suzaku space mission snaps first complete X-ray view of a galaxy clusterMay 29th, 2009 WASHINGTON - In a new study, the joint Japan-US Suzaku mission has for the first time detected X-ray-emitting gas at a cluster's outskirts, where a billion-year plunge to the center begins. "These Suzaku observations are exciting because we can finally see how these structures, the largest bound objects in the universe, grow even more massive," said Matt George, the study's lead author at the University of California, Berkeley.
Monsoon drives long-term carbon cycles in the global oceanMay 9th, 2009 WASHINGTON - In a new research, it has been determined that monsoon drives long-term cyclicity of the carbon reservoir in the global ocean. For over 300 years, monsoon has been considered as a gigantic land-sea breeze of regional scale, but now it is considered as a global system over all continents but Antarctica.
Earth's earliest ice age may have been caused by rise in oxygenMay 8th, 2009 WASHINGTON - In a new research by an international team of geologists, it has been suggested that Earth's earliest ice age may have been due to the rise of oxygen in Earth's atmosphere, which consumed atmospheric greenhouse gases and chilled the earth. The research was done by scientists from the University of Maryland, including post-doctoral fellows Boswell Wing and Sang-Tae Kim, graduate student Margaret Baker, and professors Alan J.
Origin of sulfur in rocks point to oxygen-rich atmosphere 2.4 billion years agoApril 17th, 2009 WASHINGTON - A team of geochemists has come across evidence that Earth's atmosphere 2.4 billion years ago was oxygen-rich, as pointed out by the origin of sulfur in rocks. Sedimentary rocks created more than 2.4 billion years ago sometimes have an unusual sulfur isotope composition thought to be caused by the action of ultra violet light on volcanically produced sulfur dioxide in an oxygen poor atmosphere.
History extracted from teeth of Christopher Columbus' crewMarch 20th, 2009 WASHINGTON - Dead men do tell tales. Researchers are now extracting history from the teeth of crew members Christopher Columbus left on the Caribbean island of Hispaniola after his second voyage to America in 1493-94.
NASA to launch carbon dioxide tracking satellite TuesdayFebruary 24th, 2009 WASHINGTON - Scientists hope to get a clearer picture of how the Earth reacts to carbon dioxide with the launch Tuesday of a new spacecraft designed to collect data on the climate-changing gas. The Orbiting Carbon Observatory is set for launch early Tuesday from California and will take about eight million measurements every 16 days for the next two years.
Loading ...