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Bigger in Biological News

Beverage consumption a bigger factor in weight

When it comes to weight loss, what you drink may be more important than what you eat, according to researchers at the Johns Hopkins Bloomberg School of Public Health. Researchers examined the relationship between beverage consumption among adults and weight change and found that weight loss was po...

Male crickets with bigger heads are better fighters, study reveals, echoing ancient Chinese text

Observing and betting on cricket fights has been part of Chinese cultural tradition since at least the Sung Dynasty (A.D. 960-1278). This ancient practice has resulted in quite a detailed list of characteristics that Chinese practitioners think make for champion fighters. "Because money was involv...

In the animal world, bigger isn't necessarily better

TORONTO, ON. Shocking new research shows size isn't always an advantage in the animal world, shattering a widely-held belief that bigger is better. Michael Kasumovic, a former University of Toronto Scarborough PhD student, examined Australian Redback male spiders to determine whether the larg...

Plants grow bigger and more vigorously through changes in their internal clocks

AUSTIN, TexasHybrid plants, like corn, grow bigger and better than their parents because many of their genes for photosynthesis and starch metabolism are more active during the day, report researchers from The University of Texas at Austin in a new study published in the journal Nature . Their...

Insects take a bigger bite out of plants in a higher CO2 world

Atmospheric carbon dioxide levels are rising at an alarming rate, and new research indicates that soybean plant defenses go down as CO2 goes up. Elevated CO2 impairs a key component of the plants defenses against leaf-eating insects, according to the report. The University of Illinois study app...

Seismic images show dinosaur-killing meteor made bigger splash

AUSTIN, TexasThe most detailed three-dimensional seismic images yet of the Chicxulub crater, a mostly submerged and buried impact crater on the Mexico coast, may modify a theory explaining the extinction of 70 percent of life on Earth 65 million years ago. The Chicxulub crater was formed when a...

Economists: Reduce fish catch now for bigger net profits later

A new and compelling argument for reducing fish harvests the profit motive could persuade world fishers to endure the short-term pain of lower catches for the long-term gain of higher returns for their labor, according to authors of a ground-breaking study on fisheries over-exploitation. They...

Largest ever study of genetics of common disease just got bigger

DNA samples from 120,000 people are to be analysed in a 30 million follow up to last year's Wellcome Trust Case Control Consortium (WTCCC), the largest ever study of the genetics behind common diseases. The seven-fold increase in the number of samples to be analysed will allow researchers to look ...

Why do cold animals make bigger babies?

Reproduction involves a critical decision: Should an organism invest energy in a few large offspring or many small ones? In a new study from The American Naturalist, Michael Angilletta (Indiana State University), Chris Oufiero (University of California, Riverside), and Adam Leaché (University of Ca...

How to grow a bigger brain

Hatchery-reared steelhead trout show increased growth of some parts of the brain when small stones are scattered on the bottom of their tank, according to a new study by researchers at UC Davis. The brains of those young fish were closer to those of salmon reared in the wild, and the fish also show...

Study finds evolution doesn't always favor bigger animals

Biologists have long believed that bigger is better when it comes to body size, since many lineages of animals, from horses to dinosaurs, have evolved into larger species over time. But a study published this week by two biologists at the University of California, San Diego in an early online ed...

Symposium to discuss geoengineering to fight climate change at the ESA Annual Meeting

...scuss the viability of geoengineering, concluding that it is potentially dangerous at the global scale, where the risks outweigh the benefits. "The bigger the scale of the approach, the riskier it is for the environment," says session organizer Robert Jackson , director of Duke University's Center on Glo...

Jet-propelled imaging for an ultrafast light source

...plets one at a time. And the nozzle won't clog, because even a particle bigger than the sample protein or virus bigger than the stream of liquid itself can still fly through the glass nozzle wi...

Smaller plants punch above their weight in the forest, say Queen's biologists

...w findings from Queen's University biologists show that in the plant world, bigger isn't necessarily better. "Until now most of the thinking has suggested...s. They also produce seeds at a much younger age and higher rate than their bigger counterparts, and establish much more quickly thus competing with the seed...

Explosive growth of life on Earth fueled by early greening of planet

...studied these rocks, but Knauth said many focused only on the carbon isotopes of Neoproterozoic limestones. Knauth and Kennedy's study looked at a bigger picture. "There are three atoms of oxygen for every atom of carbon in limestone," Knauth says. "We looked at the oxygen isotopes as well, which all...

US-Mexico border wall could threaten wildlife species

...gmy owls from Mexico to Arizona may be necessary for the persistence of the Arizona population," Flesch pointed out. The security wall could have a bigger impact on the movement of bighorn sheep, which range widely among the hilly terrain. The scientists' study estimated that at least nine populations of...

Male seahorses like big mates

...being choosy and preferring large females, they are likely to have more and bigger eggs, as well as bigger offspring, according to Beat Mattle and Tony Wilson from the Zoological Mus...

Hurricane Katrina: Phone home

...e," notes Prof. Alpert, who also works with NASA on developing models to study global warming weather patterns. This new tool, he says, can add to the bigger picture of understanding climate change patterns in general. "Accurate predictions of flooding were difficult before because there haven't been en...

New research shows dinosaurs may have been smaller than we thought

...he original equation uses. "The best way to understand the new equation is to think about a building that is built on pillars," says Birchard. "The bigger the building, the larger the pillars must be to support the weight of the building. In the same way, the legs of an animal are the pillars supporting ...

Environmental cues control reproductive timing and longevity, University of Minnesota study shows

...eproduction until the decline has occurred, when each offspring will make a bigger contribution to the gene pool. Conversely, if bad times turn to good times ...their genes thrive. "If the population is decreasing, future kids make a bigger splash in the gene pool than current kids," explains Will Ratcliff, a Colle...

Genetic finding could lead to targeted therapy for neuroblastoma

...blastoma. Copy number variation has to do with the gain, loss or duplication of snippets of DNA. "This is part of series of papers that creates the bigger picture, an understanding of the genetic mechanisms that lead to neuroblastoma," said London, the principal investigator for the Children's Oncology G...

Children's Hospital Oakland scientists first to discover new source for harvesting stem cells

... an HLA (human leukocyte antigen) matched unit of stem cells engrafts, making stem cell transplants available to more people. The more stem cells, the bigger the chance of success," said Dr. Kuypers. Drs. Kuypers and Serikov have also developed a patent-pending method that will allow placental stem cell...

Study highlights massive imbalances in global fertilizer use

...gal blooms. The decaying algae use up vast quantities of dissolved oxygen, producing a seasonal low-oxygen dead zone in the Gulf that in some years is bigger than the state of Connecticut. Since 1995, the imbalance of nutrients--particularly phosphorus--has decreased in the Midwestern United States...

Not 1, but 2 kinds of males found in the invasive round goby

...ed sperm, but sneakers produced more sperm than the parental males, and had bigger testes. By contrast, parental males have bigger glands used to produce pheromones that attract females. ...

Harvard scientist says we are what we eat -- and what we cook

...r jaws and teeth. Instead, he claims meat enabled the shift from Australopithecines to Homo habilis -- a species about the size of a chimp, but with a bigger brain -- more than half a million years earlier. Wrangham says the adoption of cooking had profound impacts on human families and relationships, ma...

ISU researcher identifies genetic pathway responsible for much of plant growth

...0 percent smaller. Now Yin and his group are trying to find what regulates HERK1 and how HERK1 controls growth. Understanding what make plants get bigger could be a critical component when producing grain and bio-mass for biofuels. "With that knowledge, maybe we have one more tool to manipulate corn a...

UCSD researchers make first direct observations of biological particles in high-altitude ice clouds

...n North America, for example. Researchers hope to use the ICE-L data to design future studies timed to events when such particles may be playing a bigger role in triggering rain- or snowfall. ...

U of Minnesota study finds high school teachers influence student views of evolution & creationism

...Teachers who don't teach evolution deny students the understanding of one of the greatest principles in history." "I was shocked that there weren't bigger differences between majors and non-majors," said Sehoya Cotner, associate professor of biology. "Evolution is the foundation of the entire discipline...

Fire is important part of global climate change, report scientists

...fire intervals, or those with highly variable fire activity. Co-lead author Jennifer Balch, a postdoctoral fellow at NCEAS, explains that there are bigger and more frequent fires from the western U.S. to the tropics. There are "fires where we don't normally see fires," she says, noting that in the humid ...

UNH: Pavement sealcoat a source of toxins in stormwater runoff

...the industry to continue to make a living, but without causing additional harm to the local ecosystems and human health, he notes. "There are much bigger environmental problems out there than PAHs from sealcoats, but the bottom line is that it is easily preventable," Watts adds. "All you have to do is n...

Men are the weaker sex

...iv University study provides scientific proof that a male baby comes with a bigger package of associated risks than his female counterparts. In a study of...ading to more cesarian section deliveries." Study Helps Doctors See the bigger Picture In a study presented to the Israel Society for Gender Based Med...

Molecular fingerprints point the way to earlier cancer diagnosis and more targeted treatment

...tial cancer growing inside. Scientists also need to continue to look at genes expressed by tumors and the proteins expressed by those genes to get the bigger picture. "It's basically a systems approach you need to take," he says. The young scientist has worked with all those pieces in his relatively sh...

Doubling a gene in corn results in giant biomass

...ction of this gene. "What happens is that you get bigger plants, possibly because they're more sensitive to...ty. So, it makes the plant slow down and gets much bigger at the end of the season." The ears of corn hav...he same. "We essentially can make any corn variety bigger with this gene. And it can be done in one cross a...

Fly like a bird through boom and bust

...on expansions in their history, probably driven by the effects of glaciation on the Australian environment," Dr Joseph said. "Boom cycles provide a bigger pool of individuals from which to select the next generation and when the bust sets in many of those individuals and their genes are eliminated throug...

GEN reports on Madoff scandal's impact on the life sciences

...nsulting firm. Abi Barrow, director of the Massachusetts Technology Transfer Center, points out that the Madoff case is an "exaggerated part of the bigger policy picture" that will not impact startups as much as the number of university research initiatives, which are expected to decrease. Other organ...

Microscope reveals how bacteria 'breathe' toxic metals

... bacteria are very small -- several hundred thousand of them could fit inside the period at the end of a sentence -- they are still thousands of times bigger than the tip of an AFM probe. So the microscope was able to slide over the surface of individual bacteria to detect protein molecules on the cell surf...

A diet rich in calcium aids weight loss

..., revealed that women who consumed diets poor in calcium had more body fat, bigger waistlines, and higher bad cholesterol levels than those who consumed moder... six-year period examined, the more weight and body fat they gained and the bigger their waistlines grew. In 2007, Angelo Tremblay and his team established a ...

Texas-sized tract of single-celled clones

... HOUSTON -- (March 11, 2009) -- A Rice University study of microbes from a Houston-area cow pasture has confirmed once again that everything is bigger in Texas, even the single-celled stuff. The tests revealed the first-ever report of a large, natural colony of amoebae clones -- a Texas-sized expanse...

'Undesirable' evolution can be reversed in fish, Stony Brook University scientists show

...ceptions, maximum size limits do not exist, so the large fish can easily be "fished out." "This is really bad news for fish because unlike humans, the bigger and older a fish is, the more offspring it produces," Dr. Conover said. "We're talking about a big fish producing ten times more eggs than the same sp...

Doubling a gene in corn results in giant biomass

...ction of this gene. "What happens is that you get bigger plants, possibly because they're more sensitive to...ty. So, it makes the plant slow down and gets much bigger at the end of the season." The ears of corn hav...he same. "We essentially can make any corn variety bigger with this gene. And it can be done in one cross a...
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