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POPSViruses can catch colds, says study that redefines life itself Prof La Scola and his colleagues were surprised to spot a smaller type of virus attached to the virus-making factory inside infected cells. The new virus - Sputnik - was unable to infect cells by itself but seemed to hijack the larger to achieve its infectious aims. By regulating the growth and death of plankton, giant viruses - and satellite viruses such as Sputnik - could be a major influence on ocean nutrient cycles and climate. "These viruses could be major players in global systems," Nature is told by Prof Curtis Suttle, an expert in marine viruses at the University of British Columbia in Vancouver.
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POPSNew clues on "The Great Dying" The lessons of the Permian-Triassic massacre are "directly applicable to the present," said John Isbell, a geoscientist at the University of Wisconsin in Milwaukee. He said the world today is in danger of exceeding a CO2 "threshold" that could set off an environmental upheaval as great as the one 251 million years ago.
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POPSWhat are the limits of life? The Chihuahuan Desert: Scientists have found that about half of the organisms at Cuatro Cienegas are most closely related to marine life, even though the oases here have not been in contact with the ocean for tens of millions of years. The Intensive Care Unit: “We keep inventing new antibiotics, but bacteria evolve resistance almost immediately, so we’re constantly playing catch-up,” he says. “How can we make the best use of the antibiotics we’ve got now? We’re using mathematical models to generate hypotheses about how we can shape and alter prescription practice to minimize or delay the evolution of resistance.” “It’s Darwinism at its finest,”
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POPSLife after oil: time to get ready James Kunstler's trademark pessimism, which, sadly, is probably right on the money. According to the Dept. of Energy, world energy demand now exceeds supply; get ready for a rough ride down the other side of the peak.
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POPSSolar-powered sea slug harnesses stolen plant genes In another surprising development, the researchers found the algal gene in E. chlorotica's sex cells, meaning the ability to maintain functional chloroplasts could be passed to the next generation. The researchers believe many more photosynthesis genes are acquired by E. chlorotica from their food, but still need to understand how the plant genes are activated inside sea-slug cells.
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POPSUS Hypocrisy Astonishes the World The exceptional “virtuous nation” does not think it is insensitive for America’s bombs to blow innocent villagers to pieces. What does the world think of the United States? The US government is like a criminal who accuses the police of his crime when he is arrested or a sociopathic abuser who blames the victim. It is a known fact that the CIA has violated US law and international law with its assassinations, kidnappings and torture. But it is not this criminal agency that will be held accountable. Instead, those who will be punished will be those moral beings who, appalled at the illegality and inhumanity of the CIA, leaked the evidence of the agency’s crimes. America uber alles! No one counts but us (and Israel). The deaths we inflict and the pain and suffering we bring to others are merely collateral damage on the bloody path to American hegemony.
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POPSMass extinctions? Blame it on the ocean In the course of hundreds of millions of years the world's oceans have expanded and contracted in response to the shifting of the Earth's tectonic plates and to changes in climate. There were periods of the planet's history when vast areas of the continents were flooded by shallow seas such as the shark and mosasaur infested seaway that neatly split North America during the age of the dinosaurs. As those epicontinental seas drained, animals like mosasaurs and giant sharks went extinct, and conditions on the marine shelves where life exhibited its greatest diversity in the form of things like clams and snails changed as well.
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POPSAntarctic peninsula marine life The first comprehensive inventory of sea and land animals around the South Orkney islands off the tip of the Antarctic peninsula has revealed a region rich in biodiversity, with more species than the Galapagos
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POPSDoes the Milky Way Influence Earth's Biodiversity Cycles? Research Says "Yes" The boost in cosmic-ray exposure may have a direct effect on Earth's organisms, according to paleontologist Bruce Lieberman. The radiation would lead to higher rates of genetic mutations in organisms or interfere with their ability to repair DNA damage. In this way, the process could lead to new species while killing off others. If future studies confirm the galaxy-biodiversity link, it would force scientists to broaden their ideas about what can influence life on Earth. "Maybe it's not just the climate and the tectonic events on Earth," Lieberman said. "Maybe we have to start thinking more about the extraterrestrial environment as well."
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POPSWhales may die from heartbreak too For Yves Paccalet, a French naturalist and philosopher who helped push through the 1986 moratorium, the intelligent and highly-social creatures may be so exhausted from their centuries-long combat with humankind that they have simply have given up the fight. "The psychological consequences of our aggression have compromised their will to live," said Paccalet, who worked extensively with French marine explorer Jacques-Yves Cousteau.
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POPSGreat wallpaper site for nature/animal lovers Animals: African Animals: Cats & Kittens Animals: Dogs & Puppies Animals: Homeless Cats Animals: Horses Animals: Marine Life Animals: Polar Animals: Tigers Animals: Various Nature: Architectural Nature: Beaches Nature: Buildings 1280x1024 Nature: California Nature: City Night Scenes Nature: Clouds Nature: Floral Designs Nature: Flowers Nature: France Nature: Fruits Nature: General Nature: Historical Buildings Nature: Italy Nature: Nat Geographic Nature: Rivers Nature: Seasons Nature: Snow Nature: Space Nature: Spain Nature: Sunsets Nature: World Travel
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