February 06, 2008 | ![]() |
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Avian Origins: New Analysis Confirms Ancient Beginnings![]() Did modern birds originate around the time of the dinosaurs' demise, or have they been around far longer? The question is at the center of a sometimes contentious "rocks versus clocks" debate between paleontologists, whose estimates are based on the fossil record, and scientists who use "molecular clock" methods to study evolutionary history. A new analysis by researchers at the University ... more Freshwater Fish Invasions The Result Of Human Activity ![]() Globally, invasive species represent a major threat to native species. A new paper published this week in the open-access journal PLoS Biology shows that, for rivers and lakes, where these invasions occur is predicted by human activity; find an area where economic activity is high and, in nearby lakes and rivers, up to a quarter of species will be migrants to the region. In the first globa ... more Tipping Points Could Come This Century ![]() A number of key components of the earth's climate system could pass their 'tipping point' this century, according to new research led by a scientist at the University of East Anglia. Published by the prestigious international journal Proceedings of the National Academy of Science (PNAS), the researchers have coined a new term, 'tipping elements', to describe those components of the climate syste ... more Ticket scalpers thrive in China's frozen transport chaos ![]() Ticket scalpers were thriving Tuesday around Guangzhou Railway Station in south China, as thousands vied for scarce seats on trains heading out ahead of the most important holiday of the year. With tickets a valuable commodity, unscrupulous vendors have emerged here to prey on stranded travellers, desperate to go home after the worst weather to hit the region in decades disrupted trains. ... more China premier predicts 'final victory' in weather war ![]() Chinese Premier Wen Jiabao said "final victory" was in sight with transportation returning to normal Tuesday after the worst winter in decades, but power outages remained a problem for millions. Most trains were running according to schedule, while the main north-south expressway was also clear, meaning a huge backlog of passengers left stranded by weeks of blizzards and icy temperatures ... more |
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![]() ![]() A U.S. study has determined older lung transplant patients who are often excluded because of lower survival rates, actually have acceptable outcomes. The UCLA Medical Center study reviewed records of lung transplant patients between March 2000 and September 2006. During the period, 50 transplant surgeries were performed on 48 patients between the ages of 65 and 72. A group of 50 patient ... more NIST building hydrogen pipeline laboratory ![]() The U.S. National Institute of Standards and Technology is constructing a new laboratory that's designed to test materials for hydrogen pipelines. Widely used in industrial processing, hydrogen is attractive as a fuel because it burns cleanly without carbon emissions and can be derived from domestic sources, researchers noted. But long-term exposure to hydrogen can cause pipelines to be ... more Geotimes Explores For Oil Around The World ![]() With oil hovering around $90 a barrel, Geotimes magazine examines emerging trends and issues in several obvious, and some not-so-obvious locations, in this month's cover story "Oil Around the World." Land disputes, foreign sanctions, terrorism, war and economics play into the exploration and recovery of the world's oil and natural gas reserves. Be it Libya, Iraq or Norway, the South China ... more Surrey Wins Role On Canadian Satellite Program ![]() Surrey Satellite Technology Limited in the UK has been awarded a contract from Canadian company MacDonald, Dettwiler and Associates to deliver a satellite platform as part of the Sapphire space object surveillance program. MDA has been selected as the mission prime and will lead the Sapphire mission team that will include SSTL and COM DEV of Cambridge, Ontario, who will build the ... more Can A Robot Draw A Map ![]() On a dry lakebed in the Mojave desert, a small experimental rover named Zoe wanders back and forth between dusty clay sediments and black fields of basaltic lava, belched out during eruptions that formed the nearby cinder cone, Amboy Crater. Atop a small rise in the landscape, in the shade of a six-foot-square canopy, a quartet of researchers sit in folding chairs, portable computers on th ... more |
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![]() ![]() A nuclear non-proliferation initiative came under recent attack in Congress after a report accused the program of failing to accomplish its original purpose. The 14-year-old Initiative for Proliferation Prevention program, operated by the U.S. Department of Energy, has already received one negative review from the Government Accountability Office in its lifetime. The GAO's second report ... more Dimona: Israeli desert town and secret nuclear site ![]() The southern Israeli town of Dimona, which was hit by a deadly suicide bombing on Monday, has achieved notoriety well beyond its size because of the nearby Negev Nuclear Research Centre. With an estimated population of around 40,000, the town lies just eight miles (12 kilometres) from the top secret desert facility where Israel is widely believed to have developed the Middle East's sole if ... more Africa quake toll rises as homeless add to aid crisis ![]() The death toll from a series of earthquakes that hit central Africa rose Monday to 44 as a major aid operation for hundreds of injured and thousands of homeless gathered pace amid new aftershocks. At least 38 people were killed in Rwanda's Western Province and six around the Democratic Republic of Congo city of Bukavu, which was near one epicentre, authorities said, while more than 450 were ... more Limited Economic Impact But Chief Meteorologist Says China Unprepared For Weather ![]() China's chief meteorologist admitted Monday the country was not prepared for the severe winter weather that has stranded millions of people struggling to get home for Lunar New Year. The blizzards and icy temperatures that have lasted nearly three weeks have left millions stuck at airports, train stations and bus depots across south, central and eastern China. "We didn't expect the snowy ... more Markets Of Biodiversity And Equity In Trade An Illusion Or Not ![]() Since the end of the 1980s, the idea has become predominant that the best way to ensure conservation of biodiversity was to create value for it in the framework of markets. The great upsurge in genetic engineering techniques at that time offered a glimpse of many possibilities for money-earning uses of natural substances by living-resource-based industries. In this context, the Convention ... more
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