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Tag: "earth" at biology news

Researchers examine carbon capture and storage to combat global warming

...more crucial, Benson said. From the air to the earth In the capture process, carbon dioxide is extracted from a mix of waste gases. The most common method sends the exhaust through a chimney containing a three-dimensional mesh. As the gas goes up, a chemical solvent drizzles down, soaking up the ga...

Study warns deep-sea mining may pose serious threat to fragile marine ecosystems

...ad author Jochen Halfar, an assistant professor of earth sciences at U of T Mississauga. "Imposing regulations after operations begin would prove very difficult, and some of the governments in the jurisdictions targeted by this industry have a poor record of mining oversight. The prospects for regulation o...

Iowa State University botanists identify new species of North American bamboo

...t were previously found across a large area of the earth are only in those two areas now. For various reasons, the Eastern U.S. and East Asia are a repository for a lot of diversity," Clark said. "But we still don't understand exactly how long it has been since our bamboos separated from their Asiatic ...

Scientists discover new life forms in the Arctic Ocean

...ments Dr. Lovejoy. "The ocean covers 70% of planet earth and we are only now coming to appreciate its rich and complex biodiversity." The other members of the team responsible for this discovery are Fabrice Not, Khadidja Romari, and Daniel Vaulot from Université Pierre et Marie Curie (France); Klaus Vale...

Microfossils unravel climate history of tropical Africa

...climate and the possible consequences of a warming earth on precipitation in central Africa. The results wi...climate and the possible consequences of a warming earth on precipitation in central Africa. ...

'Terror bird' arrived in North America before land bridge, study finds

...tablished geochemical technique that analyzes rare earth elements in a new application to revise the ages o...rth America where the species has been found. Rare earth elements are a group of naturally occurring metallic elements that share similar chemical and physic...

Dinosaur extinction didn't cause the rise of present-day mammals, claim researchers

...ompted the rapid rise of the mammals we see on the earth today. The multinational research team has be...our 'ancestors', and those of all other mammals on earth now, began to radiate around the time of a sudden increase in the temperature of the planet ?ten mil...

Reef warns of sea level rise

...alcolm McCulloch, deputy director of CoECRS and an earth scientist at The Australian National University. "The reef lies about 2.5 metres above the current high tide zone, which means that for it to survive and grow, sea levels would have had to be at least 3 to 4 metres higher than at present. "There ...

Microbe fixes nitrogen at a blistering 92 C

...can pick up enough heat from volcanism deep in the earth to cause the fixed nitrogen to revert to its gaseous form. Venting water hotter than 30 C contains very little nitrate so organisms in areas where the subseafloor temperatures are higher would lack nitrogen in a form they can use. The discovery of ...

Therapeutic role found for carbon monoxide

...in. "CO has been around since before life began on earth and, in fact, it is thought to have contributed to the origin of life. Perhaps this was a sign of its necessary role in biology." ...

Oldest animal fossils may have been bacteria

...aid lead author Jake Bailey, a graduate student in earth sciences at the University of Southern California. Bailey made his discovery by combining two separate findings about Thiomargarita, the world's largest known living bacterium. In 2005, Thiomargarita discoverer Heide Schulz, from the University o...

Tamed 11,400 years ago, figs were likely first domesticated crop

...al switch in the human mind -- from exploiting the earth as it is to actively changing the environment to suit our needs," says Bar-Yosef, professor of anthropology in Harvard's Faculty of Arts and Sciences and curator of Paleolithic archaeology at Harvard's Peabody Museum of Archaeology and Ethnology. "Pe...

Nice guys do finish first in lizards' evolutionary race

...iology. Side-blotched lizards spend their year on earth looking to reproduce, and their strategies have lessons about evolution. An article in the May 9 edition of the Proceedings of the National Academy of Sciences provides the first genetic evidence of a trait that the animals recognize and use ?even if...

Scientific issues associated with carbon-neutral energy sources such as cellulosic ethanol

...must develop alternative sources of energy." The earth receives approximately 4,000 times more energy from the sun each year than the total projected human uses in the year 2050, Somerville commented. Green plants growing throughout the world capture the sun's (solar) energy and convert it to bio-chemic...

Ancient global warming drove early primates' dispersal

...on all three continents. Carbon in the atmosphere, earth and living organisms differs in the proportion of carbon-12 and carbon-13 present. A flood of carbon-12 is associated with the onset of an event known as the Paleocene-Eocene thermal maximum (PETM), one of the most rapid and extreme global warming ev...

Atmospheric ozone recovering in mid-latitudes, report shows

...y will happen," said Derek Cunnold, a professor of earth and atmospheric sciences at the Georgia Institute of Technology. "Many in the scientific community think it will be at least 50 years before ozone levels return to the pre-1980 levels when ozone began to decline." The research results will be publis...

Scientist-astronaut sends T-cells into space

...that can accelerate cells in a range from 0.2 to 2 earth gravities. On board the space station, European Space Agency astronaut-scientist Thomas Reiter will simultaneously activate T-cells in the weightless compartment and in the centrifuge for four hours. "By activating the cells, he'll be simulating th...

Value of services performed by insects tops $57 billion in US

...ove our wastes. Humans - and probably most life on earth - would perish without insects, Vaughan said. Losey and Vaughan's study focused on the economic value of four particular services -wildlife nutrition, pest control, pollination and dung burial - selected because robust data were available for an ana...

New organic substrate

... roots; thereby, a substrate much more porous than earth is needed. Normal soil encloses some 50% of air in its interior, while this substrate encloses 90% of air and 10% of solid material. This is why these substrates accelerate the growth processes of the plant and provide much better results. Produ...

Deep-rooted plants have much greater impact on climate than experts thought

...ley Institute of the Environment, and professor of earth and planetary science and of environmental science, policy and management. The researchers incorporated these new details into the most widely accepted model of global climate, and found that it accounts for a previously observed but unexplained dip...

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