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Tag: "far" at biology news

St. Jude study solves mystery of mammalian ears

..., both the cilia and the cell itself vibrate. Thus far the question has been whether the cilia are the main engine of sound amplification in both mammals and non-mammals. One group of scientists believes that somatic motility in mammalian outer hair cells is simply a way to change the height of the cil...

One species, many genomes

... surprising: The extent of the genetic differences far exceeds the expectations for such a streamlined ge...that the DNA sequence of a single individual is by far not sufficient to understand the genetic potential of a species also fuels current efforts in human ...

Agent slows aging in mice

... show that male mice fed a normal diet and NDGA so far have survived in significantly greater numbers than mice on a normal diet. Scientists measured the difference at a point called median lifespan, when half the control mice had died of natural causes associated with aging. “This is the first time ...

Salty oceans provide early warning for climate change

...e waters is linked to sluggish flow. “Salt plays a far more important role that we first thought,” says Professor Rainer Zahn, a palaeoclimatologist at the Autonomous University of Barcelona in Spain. Salt increases the density of water. Once a pocket of water becomes salty enough it sinks, drawing in...

Researchers shed light on shrinking of chromosomes

...severe diseases including cancer can arise. But so far we know only little about condensation, a process crucial to the successful separation of chromosomes. Using powerful microscopes, researchers led by Jan Ellenberg at EMBL looked at living mammalian cells to find out how and when chromosomes shorten ...

Plastic that grows on trees

...at a particular metal — chromium chloride — was by far the most effective at converting glucose to HMF with few impurities and, as such reactions go, at low temperature, 100 degrees centigrade. “This, in my view, is breakthrough science in the renewable energy arena,” said J.M. White, IIC director and...

Exploring the dark matter of the genome

...t fly. The results confirm that heterochromatin is far from mere junk. "Most researchers thought hete...a Genome Project and Celera Genomics, was actually far from complete. It left out a third or more of the genome by covering only the fly's euchromatin and ...

In nature, proteins sweep up nanoparticles

... journal Science, reveals that the proteins travel far from the microbes that produce them, and then amas...ation of proteins and minerals that takes place as far as hundreds of microns away from the cell.” In other words, in addition to pumping nano-sized sul...

Warning from Asian bees

...s unknown how many more swarms might exist and how far afield they may have flown. Within a one kilome...a matter of when, not if, and its effects would be far more dramatic than a wide incursion of Apis cerana....

The kapok connection -- Study explains rainforest similarities

...r tree in a season, attracting bats that travel as far as 12 miles between trees and transfer pollen in the process. When the seed pods ripen, they break open to reveal fluffy fibers that are used to stuff pillows and mattresses. The seeds, which are about the size of a sunflower seed, are buoyant and ab...

Human genetic 'deserts' are teeming with significant life

...ys. “Our work has shown that the human genome is far more complex than anyone could have imagined, even ten years ago. Understanding these complexities is essential to the development of effective and safe genetic medicine in the future.”...

Male circumcision overstated as prevention tool against AIDS

...ca as a continent is experiencing an AIDS epidemic far in excess of any other region of the world with some African countries’ prevalence rates exceeding 25% of the adult population and tens of millions dying from the disease on the continent. Talbott’s new study suggests that the reason is that Africa a...

Antarctic icebergs -- Hotspots of ocean life

...d trapped terrestrial material, which they release far out at sea as they melt. The researchers discovered that this process produces a “halo effect” with significantly increased phytoplankton, krill and seabirds out to a radius of more than two miles around the icebergs. They may also play a surprising ...

Arctic ice retreating more quickly than computer models project

...arch ice Although the loss of ice for March is far less dramatic than the September loss, the models underestimate it by a wide margin as well. The study concludes that the actual rate of sea ice loss in March, which averaged about 1.8 percent per decade in the 1953-2006 period, was three times large...

Madagascan tropical forests return thanks to better management and well-defined ownership

...over. "Regeneration of tropical forests has so far mostly been studied by ecologists trying to understand factors like seed dispersal and soil quality, our study clearly shows the importance of an increased understanding also of the social context behind forest regeneration," says Elmqvist. The loss ...

Amphibians in losing race with environmental change

...s are believed extinct. The impacts of changes are far more pervasive on amphibians than many other vertebrates, such as birds or mammals. "Historically, amphibians were adept at evolving to deal with new conditions," Blaustein said. "What they are doing is showing us just how rapid and unprecedented ...

The sound of proteins

...niversity of California, Los Angeles, USA, have so far transcribed segments of two human proteins into music. But to make their melodies more pleasing on the ear, they had first to overcome a few problems ?how to incorporate rhythm, and how to cram the 20 standard amino acids (the building blocks of prot...

Climate change impacts stream life

...ng habitats, yet little emphasis has been given so far to the ecological effects of climate change on these running-waters. Now a twenty-five year study at Llyn Brianne in central Wales, led by Professor Steve Ormerod and Dr Isabelle Durance of the Cardiff School of Biosciences, has examined for the...

Alien plants attack using 'resource conservation' as weapon, researchers say

...hich invasive species pose the greatest threat are far from complete, Funk added. "With this new information, we can now take a look at those lists with the thought in mind that we better consider adding species that are really resource efficient," Vitousek said. "And then we can hunt those down." ...

Corals -- More complex than you?

...enes that have been lost from all other animals so far examined. These include genes for the development ...s that coral genes may interact with each other in far less complex ways. Humans, on the other hand, are the product of a continuous and complicated dialo...

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