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Tag: "biggest" at biology news

Massive herds of animals found to still exist in Southern Sudan

...he Serengeti,” said Fay. “This could represent the biggest migration of large mammals on earth.” Fay, Elkan and Marjan also report an estimated 8,000 elephants, with concentrations mainly in the Sudd, the largest freshwater wetland in Africa. They also found evidence of even larger numbers of elephants in ...

Marine phytoplankton changes form to protect itself from different predators

...dramatic. “When one of these cells changes to the biggest colony form, although it takes a while, it’s like changing from a mosquito to 76 blue whales or 3,000 bull elephants,” Hay explained. “That’s a pretty dramatic difference.” Defensive responses are often seen in higher plants, but this is believed...

Children of smokers have more than 5 times higher levels of a nicotine toxin

... Having a mother that smokes was found to have the biggest independent effect on cotinine in the urine – quadrupling it. Having a smoking father doubled the amount of cotinine, one of chemicals produced when the body breaks down nicotine from inhaled smoke to get rid of it. Sleeping with parents and lowe...

Scientists close in on missing carbon sink

..." The missing carbon For years, one of the biggest mysteries in climate science has been the question of what ultimately happens to the carbon emitted by motor vehicles, factories, deforestation, and other sources. Of the approximately 8 billion tons of carbon emitted each year, about 40 percent accu...

A first -- Hebrew University scientist observes brain cell development in 'real time'

...ional complexity of nerve cells remains one of the biggest mysteries of neuroscience, and we now have a model to study this complexity directly." The results of Dr. Mizrahi’s groundbreaking work appeared in the online edition of Nature Neuroscience. Using special microscopic imaging techniques, combin...

UC Davis researchers use heated nanoprobes to destroy breast cancer cells in mice

...cer cells isn't a new concept," DeNardo said. "The biggest problems have been how to apply it to the tumor alone, how to predict the amount needed and how to determine its effectiveness. By combining nanotechnology, focused AMF therapy and quantitative molecular imaging techniques, we have developed a safer ...

Tracking sperm whales and jumbo squid

... and grow more than 6 feet long. Sperm whales, the biggest of all toothed whales, inhabit every ocean. An adult male can reach nearly 60 feet in length and weigh 57 tons. The sperm whale was immortalized by Herman Melville in his novel Moby-Dick. Heavily hunted for their oil during Melville’s time, the sp...

Progress toward artificial photosynthesis?

... Goettmann, Thomas and Antonietti, " is one of the biggest challenges in synthetic chemistry." The bonds in this molecule are very stable, so a lot of energy is needed to split them. To date, only a few special metal catalysts are known to be capable of breaking the C–O bonds in CO2. In contrast to most p...

UBC researchers reveal dwarf aquatic plants' hidden ancestry

...es. The discovery clarifies what may be one of the biggest misunderstandings in botanical history. "It’s a classic case of mistaken identity," says Sean Graham, an associate professor and researcher with the UBC Botanical Garden and Centre for Plant Research in the Faculty of Land and Food Systems. "And it...

New species declared: Clouded leopard on Borneo and Sumatra

...g the Heart of Borneo.? Clouded leopards are the biggest predators on Borneo. Some grow to be as large as a small panther, and have the longest canine teeth relative to body size of any cat. Sumatran tigers are the largest predators on Sumatra. Between 5,000 and 11,000 clouded leopards are estimated t...

Growth hormone is not the anti-aging bullet for healthy adults

...t growth hormone's anti-aging properties. "Our biggest surprise was the general lack of research that had been done in this area. When we reviewed the scientific evidence, we found that there were really only about 500 patients involved in rigorous controlled trials. And only a few more than 200 actually...

Boosting brain power -- with chocolate

...rt period. The findings, unveiled at one of the biggest scientific conferences in America, also raise the ... for the Advancement of Science (AAAS), one of the biggest annual gatherings of scientists from all over the world. This year's meeting takes place in San Fran...

Salamanders suffer delayed effects of common herbicide

... was while the animals were being exposed. "The biggest surprise was that it took nearly a year to detect the effects of atrazine at 4 parts per billion, which is just 1 part per billion above the maximum allowable level in drinking water set by the U.S Environmental Protection Agency," said Rohr, who pre...

A revolution in the monitoring of unborn babies

...hnology that would fill these gaps. One of the biggest obstacles in developing the fetal monitor was separating the baby’s heart beat from the mother’s signal. The team has successfully created a state-of-the-art device which can gauge both heart rates as well as fetal position. This unique home monitori...

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

... gains and losses increased, Poldrack said. The biggest risk-takers, who are willing to accept very risky gambles, have brains that respond less as the stakes increase, Poldrack said. ...

Common cold virus may kill breast cancer cells

...funding the Australian research that will have the biggest impact on the prevention and treatment of breast cancer. This research will be translated into benefits for all Australians, regardless of which State the research is conducted in." Ms Murray said. ...

St. Jude announces breakthrough in eye cancer treatment

...certain cancers. This work is likely to have its biggest impact on the care of children with retinoblastoma internationally, according to Dyer. Most children in the United States with retinoblastoma do not die from the disease because they benefit from early detection and advanced medical treatment. The co...

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

...ey can infect otherwise healthy people. One of the biggest problems with CA-MRSA skin infections is that they spread rapidly and have the potential to cause illness much more severe than traditional hospital-associated MRSA infections, where PVL is less common. These life-threatening infections can affect vi...

British cattle give TB to badgers, finds UC Davis expert

...Laboratory and Veterinary Laboratories Agency. The biggest increases in infection rates happened in culling areas that could most easily be repopulated by badgers migrating in from neighboring land. Today's report also provides the first evidence of widespread TB transmission from cattle to badgers. Woodrof...

Researchers identify a key regulator for skin stem cells

...e into epidermal and sebaceous gland cells. The biggest surprise, said Fuchs, came when the researchers analyzed how switching on Tcf3 affected the differentiation of embryonic skin stem cells. They found that activating the gene in mice blocked differentiation of all three types of mature skin cells -- e...

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