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Tag: "years" at biology news

Small species back-up giant marsupial climate change extinction claim

...ut Australian giant marsupials or megafauna 40,000 years ago. Instead of only excavating 'trophy specimens... Pleistocene epoch, between 1.8 million and 10,000 years ago. In the northern hemisphere species such as the woolly mammoth and sabretooth tiger dominated t...

Growth in biomass could put US on road to energy independence

...mption by electric utilities would double every 10 years through 2030. During the same time, production of chemicals and materials from bio-based products would increase from about 12.5 billion pounds, or 5 percent of the current production of target U.S. chemical commodities in 2001, to 12 percent in 2010...

New Estimates For The Causes Of Child Deaths Worldwide

...ributions of deaths in children younger than age 5 years by cause for the six WHO-defined regions. Among deaths in children, 42% occur in the WHO Africa region, and an additional 29% occur in the south-east Asia region. The authors state that the causes of child deaths can be addressed through existing, a...

Human Cells Filmed Instantly Messaging for First Time

...mption by electric utilities would double every 10 years through 2030. During the same time, production of chemicals and materials from bio-based products would increase from about 12.5 billion pounds, or 5 percent of the current production of target U.S. chemical commodities in 2001, to 12 percent in 2010...

Youth With HIV Take More Risks After New Meds Introduced

...h more partners than their counterparts did in the years before powerful new medications for HIV were introduced in 1996, according to a new report in the American Journal of Health Behavior. A group of HIV-positive youth studied between 1999 and 2000 reported having more sexual partners, more unprotected...

Canada approves marijuana-based pain spray

...n diagnosed in people between the ages of 20 to 40 years of age. ...

Biologists discover why 10% of Europeans are safe from HIV

...so confined to Europe, persisted for more than 300 years and had a 100% case mortality." Around 1900, historians spread the idea that the plagues of Europe were not a directly infectious disease but were outbreaks of bubonic plague, overturning an accepted belief that had stood for 550 years. Professor Du...

Leprosy microbes lead scientists to immune discovery

... "innate" immune reaction--discovered less than 10 years ago--is mounted by two differently-specialized cells. It had been thought that the initially responding cells were uniformly macrophages, equipped for the two roles. The innate response swings into action when invading microbes are detected by molecu...

First North American Encapsulated Islet Transplant without Long-term Immune Suppression into a Patient with Type 1 Diabetes

...so confined to Europe, persisted for more than 300 years and had a 100% case mortality." Around 1900, historians spread the idea that the plagues of Europe were not a directly infectious disease but were outbreaks of bubonic plague, overturning an accepted belief that had stood for 550 years. Professor Du...

Different microarray systems more alike than previously thought

...their platform." When the study began roughly two years ago, microarray platforms were an exciting technology in the medical and biological sciences, but comparisons of results from different platforms had proved inconsistent. Previous studies indicated that Affymetrix GeneChips, for example, the commerci...

Shift of weather patterns necessitates rethinking of reforestation methods

...owners have had to replant two, three or even four years in a row because of poor seedling survival." Seco...id. "Using a Texas Forest Service analysis of 100 years of weather data, we see a cyclical pattern of 25 years of summers that are either hot and drier or c...

Study: 'homemade' gene expression technology unreliable

...rray platforms came into widespread use about five years ago. Pioneers in the field constructed their own gene chips, but these have now been replaced by much more reliable commercial platforms that generate highly reproducible data. One of these is used by CROET and another by OHSU's West Campus microarra...

Scientists journey to southern Africa to unravel the secret world of elephant communication

...y other elephants more than 2 miles away. Several years later, environmental scientist David Larom and his...ief period of ovulation that only occurs every two years and lasts just a few days. "Females in estrus make these very low, long calls that bulls home in on...

Cooperation is key—a new way of looking at MicroRNA and how it controls gene expression

... the mRNA. Despite much research over the last few years into exactly how this works, the question had not ... or 20 nucleotides, were first identified about 20 years ago, and in the past few years scientists have realized that microRNA is a new category of regulator...

Anammox bacteria produce nitrogen gas in oceans' snackbar

...red this type of bacteria for the first time a few years ago in the oxygen poor Black Sea and now also in the open ocean. This discovery has major consequences for our understanding of the global nitrogen cycle. The Benguela current system leads to upwelling of nutrient-rich cold water off the coast of Nam...

Turning viruses into allies against cancer

...ector. "We expect this work will take another two years before this technology will be available for testing in patient studies," said Blechacz. ...

Researchers discover underwater volcano

...us Samoan goddess of war, did not exist just fours years ago, according to co-chief scientists Hubert Staudigel, a geologist at Scripps's Cecil H. and Ida M. Green Institute of Geophysics and Planetary Physics, and Stan Hart, a geochemist at Woods Hole Oceanographic Institution. With a growth rate of at le...

Grizzlies set to invade high Arctic?

...abit the Melville Island area. During the past 15 years there have been more and more sightings for barren-ground grizzlies on the sea ice in the Arctic from the Beaufort Sea to Hudson Bay. They're also known to be able to survive the winter and den on Victoria Island, the island separated from Melville t...

MUHC scientists describe genetic resistance to rampant virus

...ocked in an evolutionary arms race for millions of years in an attempt to overwhelm each other. Dr. Vidal and her team have spent the past 10 years studying CMV-resistant mouse strains in an attempt to describe the nature of their genetic resistanc...

New project aims to make large-scale lobster farms feasible

...ve now received Phase II funding from NOAA for two years totaling $200,000 to explore techniques for gathering even more larvae, to study open water and land-based methods for raising the larvae to adulthood, and to begin developing possible feeds for the lobster. Small-scale lobster culturing has been pos...

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