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Tag: "extreme" at biology news

Deep thinking: Scientists sequence a cold-loving marine microbe

...or of the PNAS paper. "This organism must adapt to extreme cold--in fact, it cannot live above room temperatu... and carbon, which could be in short supply in the extreme cold. The organism also engineers cold-hardy versions of ordinary enzymes found in free-living bacte...

ORNL, UC Berkeley unravel real-world clues to Earth's mysteries

...eit. "This microbial community is thriving at the extreme edge," said Bob Hettich, a co-author and member of ORNL's Chemical Sciences Division. "A pH level of 0.8 is like swimming in sulfuric acid, so we'd like to know how this community can survive and how we might be able to use this information to better...

Motor transport in bio-nano systems

... different organelles or cellular compartments. An extreme case is provided by the long-ranged transport of vesicles and organelles along the axons between our nerve cells, which can be as long as half a meter. All of these movements are based on two molecular components: very thin rod-like filaments, which ...

Caloric restriction won't dramatically extend life span in humans: UCLA research

...od all the time," he said. "I'm not going to be so extreme that I become the mouse that bites anyone who touches me. My advice about food is be sensible, and don't be a fanatic about it because the payoffs are not worth it." While the relationship between how much you eat and your life span is not so dramat...

International Team Determines Geographic Origin of Leprosy

...tter pairs. The rarity of SNPs is an indication of extreme genetic stability: all the strains of leprosy throughout the world are essentially identical. The discovery of the four SNP types could help health officials better understand leprosy in present day human populations, says Christine Sizemore, Ph.D.,...

Going To Extremes To Improve Human Health

...ow University of Oregon scientists to replicate an extreme range of environmental conditions in their quest to test and understand the human body's response to everyday stresses. The instrument, called an environmental chamber, is a 12-foot-square room capable of simulating altitude up to 18,000 feet, holdi...

Scientists focus on 'dwarf eye'

...rs to be the first human gene mutation that causes extreme farsightedness. The researchers report that nanop...ed in mice as a cause of retinal degeneration, not extreme farsightedness," he said. "However, a mouse's eyes do not adjust their focus through growth like hu...

Study casts doubt on 'Snowball Earth' theory

...ynthesis occurred in the Earth's oceans during the extreme ice age 700 million years ago, which is a challenge for the snowball theory." The evidence from the drill core does not prove that large parts of the ocean remained free of sheet ice during the pre-Cambrian glaciation. It is statistically unlikely b...

Discovering an ecosystem beneath a collapsed Antarctic ice shelf

...e shelves and further probe the origins of life in extreme environments. Researchers discovered the sunless h...d 850-meter [approximately 2800-foot] depth. Such extreme cold-vent regions have previously been found near Monterey, California, where the phenomenon was dis...

Secrets of the deep may hold key to life on other planets

Leeds researchers use NERC grant to understand extreme sea creaturesExtraordinary creatures who inhabit extreme underwater conditions are being investigated by University scientists in a three-year project. These...

Study shows eutrophic lakes may not recover for a millennium

...ollution could put Lake Mendota on a fast track to extreme degradation. "There is a potential shift to an extremely degraded state that could occur even if we shut off the phosphorus tomorrow. It would have water quality as bad as the worst lakes in the world." Lakes that are that highly eutrophic, Carpente...

Envisat and ERS-2 reveal hidden side of Hurricane Rita

...y a large, powerful storm centred around a zone of extreme low pressure. Strong low-level surface winds and bands of intense precipitation combine strong updrafts and outflows of moist air at higher altitudes, with energy released as rainy thunderstorms. Envisat carries both optical and radar instruments, ...

Past droughts geographically widespread in the West, according to tree-ring data

...icits on the Salt and Verde rivers during times of extreme drought," said Charlie Ester, Salt River Project's...The longest continuous period when both basins had extreme low-flow years was three years; Within any four-year period, having either high flow or low f...

Marine bacterium suspected to play role in global carbon and nitrogen cycles

...outh. Archaea have primarily been associated with extreme environments like hot springs and deep-sea vents, but about a decade ago molecular studies proved their abundance in more common environs including the open ocean, freshwater and soil. Subsequent efforts to grow various samples of these organisms le...

Clear rules needed to govern deep sea bioprospecting: UNU

...etic make-up of organisms of the deep that live in extreme conditions of pressure, temperature and toxicity is drawing enormous interest from scientists and companies bioprospecting for possible pharmaceutical or industrial applications. Already several valuable products have been created and there is growin...

A Father’s Day Gift: Free DNA Paternity Testing

...etic make-up of organisms of the deep that live in extreme conditions of pressure, temperature and toxicity is drawing enormous interest from scientists and companies bioprospecting for possible pharmaceutical or industrial applications. Already several valuable products have been created and there is growin...

Living with salt

...ife, such as proteins, have adapted to function in extreme environments. The proteins they investigated were isolated from halophilic (salt-loving) microorganisms from the Dead Sea. After determining the 3-D structures for several halophilic proteins, researchers were able to explain how these proteins not o...

Evolution of life on Earth may hold key to finding life in outer space

...at HMNS until December. "Fantasy Worlds" explores extreme environments of Earth for a rare glimpse at microb...hiles that thrive in environments once thought too extreme to sustain life. Given the intense conditions under which these microbes are able to exist on Earth,...

Environmental lessons from tsunami as world's coastal population doubles

...and ecosystems are more likely to bounce back from extreme coastal disasters by protecting local environments...n tsunami has given valuable insight into handling extreme coastal disasters - inevitable as the world's coastal population is set to double by 2030 and global...

A radical solution for environmental pollution

...ounds with examples of bacteria that can thrive in extreme situations---surviving on toxic chemicals, for instance. In a paper published online in the Journal of the American Chemical Society (JACS) May 25, University of Michigan researchers show how some bugs manage to do that: by harnessing other potential...

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