surprising 2 8

Tag: "surprising" at biology news

Sex and the heart: It's not what you think

A surprising new study finds that women in their 60s have as many risk factors for heart disease as men, and by their 70s have more, according to research led by demographers at the University of Southern California. The findings, published in the current issue ...

Why do insects like to eat some plants more than others?

...ts prefer to feed on flowers, so it's not terribly surprising that they are abundant on cacti that invest most of their resources in flowers." "What was surprising," Miller adds, "was how one single trait predicted the variation" The results also have implications for understanding the evolution of plant...

From hot springs to rice farms, scientists reveal new insights into the secret lives of archaea

...e change Three AGU presentations will focus on surprising new findings about the significant impact of archaea on global climate and nutrition. In recent years, scientists have discovered that methanogenic archaea play an important role in the build-up of methane gas in the atmosphere. According to the Envi...

Scientist's persistence sheds light on marine science riddle

...toward this result. I hope there will be many more surprising results in the years to come." The database Malacolog ( www.data.acnatsci.org/wasp ) documents species of mollusks in the Western Atlantic, from Greenland to Antarctica. Scientists have suggested several explanations for the evolution of body size ...

One signal elicits thousands of answers

...tion sites still await identification." Equally surprising was the discovery that about half of all cellular proteins harbour more than one phosphorylation sites, which in many cases behave differently. "This makes more than one way of phosphorylation possible where proteins serve as integrating platforms fo...

Learning during sleep?

...s just a slight delay, like an echo. This was a surprising finding, because the interneurones suppress those neurones in the hippocampus which are supposed to write information to the cerebral cortex precisely during phases of high activity. According to Mayank Mehta the result can be interpreted in very dif...

'Empty nester' parent birds use recruitment calls to extend offspring care

...the Kalahari Desert, researchers have discovered a surprising new way in which parent birds can extend the period of their care of offspring. The findings are reported by Andrew Radford of the University of Cambridge and Amanda Ridley of the University of Cape Town and appear in the September 5th issue of Curre...

New bird discovered on unexplored Columbian mountain

...national park was established in the region. It is surprising that this new brush-finch and the forests of the Yariguíes Mountains could remain unstudied, undescribed and unprotected for so long." This description is noteworthy in that one of the two birds caught by the team and used in the description as a...

Global changes alter the timing of plant growth, scientists say

...ust one aspect of global change and highlights the surprising ways in which natural communities may respond to changing environmental conditions." ...

MRSA toxin acquitted: Study clears suspected key to severe bacterial illness

... online in The Journal of Infectious Diseases, are surprising because many scientists had presumed that CA-MRSA uses PVL to target and kill specific white blood cells known as neutrophils. "The Staphylococcus aureus bacterium is a growing global public health menace because of its rapid spread from hospital ...

Chronic jet-lag conditions hasten death in aged mice

...they had noticed in an earlier, unrelated study: A surprising fraction of old (but genetically altered) rats exposed to a six-hour advance in their light cycle died after the shift in schedule. In the new work, the researchers examined the mortality link in earnest by looking at how young mice and old mice f...

When smell cells fail they call in stem cell reserves

...grow much or do anything,?says Reed. “And the most surprising thing is that HBCs can grow into both nerves and non-nerve cells; they do so by generating the other active type of nasal stem cell.? The team then went back and looked at nerve repair under less damaging circumstances where only the olfactory nerv...

UCLA: How does your brain respond when you think about gambling or taking risks?

... turned off when we think about losing money. A surprising finding is that as the amount of a potential loss increases, the parts of the brain that process fear or anxiety, such as the amygdala or the insula, are not activated. "What we found instead," Poldrack said, "is you don't turn anything up. You tu...

Scientists reveal structure of gateways to gene control

...urned on in a particular cell. The study's many surprising findings together reveal an intimate relationship between the architecture of nucleosome structures and the underlying DNA sequences they regulate. "We now know exactly where these nucleosomes are positioned on the DNA molecule and which DNA buildin...

How fish conquered the ocean

...tial for life," continues Dr. Finn, "so it seems a surprising paradox that fishes that live in water should have a problem acquiring it. Yet it was this paradox that provided the trail of clues for us to follow". "The physiological problems of reverting from a fresh water environment to the saline seawater i...

Thinking with the spinal cord?

... issue of Science. The research group behind the surprising results consists of Professor Jørn Hounsgaard and Post.doc Rune W. Berg from the University of Copenhagen, and Assistant Professor and PhD Aidas Alaburda from the University of Vilnius. The group has shown that spinal neurons, during network activity...

Study of planarians offers insight into germ cell development

...ividuals of this species, the researchers made the surprising discovery that these asexual individuals also express nanos and produce germ cells. Some other mechanism, as yet unknown, prevents these germ cells from developing into functional testes and ovaries. "Having a simple organism that also uses induct...

Bird sex is something else

...dosage compensation," says Arnold. "The finding is surprising because dosage compensation was previously thought to be critical for survival. Birds, however, seem to be doing just fine without sexual equality of Z gene expression". ...

New research may overturn conventional wisdom on drug-resistant tuberculosis

...d by re-infection compared to mutation. "It was surprising to find a high rate of primary drug-resistant strains among treated patients," said Dr.Gao. "This overturned the common belief that drug resistance among treated patients is always acquired." The investigators also noted that two patients in the s...

Antibody signal may redirect inflammation to fuel cancer

...cancer develop. The finding adds a critical and surprising detail to the emerging view that inflammation, usu...al signals remotely through the blood’s serum. The surprising nature of the discovery and its implications were explored in a June 2005 commentary in "Nature" (2)...

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