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Tag: "decade" at biology news

Satellites shed light on global warming

... over the last 50 years by half a degree Celsius a decade and are having an impact on the ice shelves and glaciers. Innsbruck University's Professor Helmut Rott has been observing the accelerated retreat and break-up of the Larsen Ice Shelf on the Antarctic Peninsula in the face of this warming through rada...

Genomics throws species definition in question for microbes

Until a decade ago, scientists categorized microorganisms almost exclusively by their physical characteristics: how they looked, what they ate, and the by-products they produced. With the advent of genomic sequencing and genetic analysis in the 1990s, our understa...

Syphilis rate on rise in US gay, bisexual men

...eople were selling sex to get crack cocaine as the decade went by. However, the syphilis rate rose by 19 percent between 2000 and 2003. During that period, the rates among women continued to slide ?by 53 percent ?while rates among men jumped by 62 percent. While syphilis statistics do not identify the...

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

...national research team has been working for over a decade to compile the tree of life from existing fossil records and new molecular analyses. They show that many of the genetic 'ancestors' of the mammals we see around us today existed 85 million years ago, and survived the meteor impact that is thought to ...

Biologists call for better choice of model organisms in 'evo-devo'

...ect of evo-devo, which became established almost a decade ago, is particularly dependent on the six main model organisms that have been inherited from developmental biology (fruit fly, nematode worm, frog, zebrafish, chick and mouse). To help understand how developmental change underpins evolution, evo-...

Human preference for other species could determine whether they survive

...r books Stokes examined were published in the last decade and were aimed at the popular adult audience. He eliminated photographs from consideration when factors other than the penguins themselves ?the surrounding landscape, for example, or accompanying humans ?could have played a role in their selection. H...

End-of-life care can be improved

...tremendous progress that has been made in the past decade and represents the state of the art for assessing and improving end-of-life care in the ICU," comments guest co-editor Mitchell Levy, M.D., professor of medicine at Brown University School of Medicine in Providence, R.I. Quality End-of-Life Palli...

Record ozone loss during 2006 over South Pole

...Earth from harmful ultraviolet rays. Over the last decade the ozone level has lowered by about 0,3% per year on a global scale, increasing the risk of skin cancer, cataracts and harm to marine life. The thinning of the ozone is caused by the presence of pollutants in the atmosphere such as chlorine, orig...

Study IDs protein that inhibits HIV from growing in cell cultures

...le in HIV infection have been studied for nearly a decade by Xiang, along with another study author Jack Stapleton, M.D., staff physician and researcher at the VA Iowa City Health Care System and professor of internal medicine at the UI Roy J. and Lucille A. Carver College of Medicine. "Identifying a sp...

Fatty fish protects against cancer

...can. Now, with the help of another questionnaire a decade later and the cancer registry, scientists at Karolinska Institutet have concluded that women who eat fatty fish gain significant protection against renal cancer. At least one portion of fatty fish a week during the period (1987-2004) reduced the ris...

Dust to gust

... dust provider. It has been known for more than a decade that the existence of the Amazon rainforest depends on a supply of minerals washed off by rain from the soil in the Sahara and blown across the Atlantic by dust. By combining various types of satellite data, Dr. Koren and colleagues from Israel, the ...

Scientists solve 30-year-old mystery of mutant mouse's kidney woes

... kidney disease, but a follow-up study more than a decade later showed that passage of urine from the kidney was blocked, and the condition was renamed congenital progressive hydronephrosis. With assistance from the mouse genome sequence and Li Ding, Ph.D., a research instructor at the Genome Sequencing C...

Ghost protein leaves fresh tracks in the cell

...ne. Dubreuil and his UIC co-workers have spent a decade looking at different types of cells -- mostly epithelial -- trying to learn what cues tell spectrin where to assemble in cells. They use the fruit fly as their test animal because its genetic makeup has many striking similarities to humans. "In our...

Surprise finding for stretched DNA

...st pioneers in this area of research. More than a decade ago, he and his research group tethered DNA molecules to tiny beads and measured their elasticity. Among the many breakthroughs he and his group have achieved is the development of the technique called "rotor bead tracking." In rotor bead tracki...

What's nature worth? New computer models tell all

...n a now-famous paper in the journal Nature. In the decade following, the science of "ecosystem services" has bloomed. This young discipline studies how nature--through climate regulation, soil formation, crop pollination, flood protection, and so on--supports human welfare, and estimates its value in econom...

Flick of whiskers helps tease out brain's 'shadow' signaling system

... are merely support cells for neurons. More than a decade ago Nedergaard discovered that astrocytes send signals to the neurons, and the neurons respond. Since then she has made a series of findings that neurons and astrocytes talk back and forth, indicating that astrocytes are full partners in the basic wo...

Molecular DNA switch found to be the same for all life

...he prokaryote initiator. Studies over the past decade have demonstrated that all of the multiple events that initiate DNA replication in a eukaryote are directed by a single complex of proteins called the origin recognition complex (ORC). However, until now, models of the ORC proteins have lacked suffi...

New tiger report release: Tiger habitat down from just a decade ago

...0 percent less habitat than they were thought to a decade ago. The tigers now occupy only 7 percent of their historic range. This landmark study, commissioned by the National Fish & Wildlife Foundation's Save The Tiger Fund and produced by some of the world's leading tiger scientists at World Wildl...

Elephants, large mammals recover from poaching in Africa's oldest national park

... species of large mammal are now recovering from a decade of civil war and rampant poaching, according to th...ce it was created, but recent unrest over the past decade has resulted in a decrease in tourism dollars as well as wildlife. Tourism in the region has the pot...

Five surprising facts about starvation that could change the international agenda

...dulthood. The world cannot afford to waste another decade talking about global targets, waiting for the macro-effects of economic and political development to reach children ignored by the development process." Patrick Webb served as chief of nutrition for the United Nations World Food Programme until Augu...

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