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Tag: "demand" at biology news

Mice with a migraine show signs of brain damage

...uncovered a complex, unexpected tale of supply and demand regarding blood flow and oxygen. In short, the team found that the brain develops a voracious demand for energy as the organ attempts to restore the delicate chemical balance that is lost in the initia...

Study warns deep-sea mining may pose serious threat to fragile marine ecosystems

...ulations are often weaker or non-existent. "The demand for metals is growing rapidly, and along with the sharp rise in metal prices, we have seen the depletion of metal-rich terrestrial mines," says Halfar. "For mining companies and their investors, undersea mining offers high concentrations of ore at re...

Biodiesel study targets cleaner air, cleaner engines

...results ?expected in early May ?will help increase demand for biodiesel, which in turn will increase market opportunities for recycled materials and oils and give farmers the chance to grow some of their own fuel. Recent government announcements supporting renewable fuels will help advance the demonstration...

New report: Explosive growth changes salmon industry

...es. "Wild salmon could never supply the market demand being met by farmed salmon. A fundamental point of the report is that the debate should not be about wild versus farmed, but whether each method of production is being done right," says Dr. Gunnar Knapp, professor of economics at the University of A...

Bacterial walls come tumbling down

...d design of new antibiotics, which are in constant demand as microbes continually evolve new ways to evade the drugs that researchers design to thwart them. The time it takes for bacteria to develop resistance to new antibiotics has been as short as one year for penicillin V and as long as 30 years for vanc...

20-year study shows significant rise in childhood obesity, especially among girls

...re technological, various aspects of everyday life demand less and less physical activity and this is bound to contribute to childhood obesity. "And as overweight and obese children become overweight and obese adults they run a much higher risk of developing cardiovascular disease and type-2 diabetes." ...

Natural gut hormone offers hope for new obesity drug

...e treatment may be fast tracked to meet the urgent demand to tackle the obesity crisis," she explains. "There is currently a lack of effective treatments and our proposed drug is based on a natural way of controlling the body's appetite, which makes it more attractive." ...

UF scientists discover new genus of frogmouth bird in Solomon Islands

...confidently in any existing genus, and so the data demand naming a new one." Storrs Olson, a senior zoologist with the Smithsonian Institution, said that frogmouths are an enigmatic group of birds to begin with. "That this should prove to be such a distinctive new genus, which it unquestionably is, ha...

Twenty of world's 162 grouper species threatened with extinction

...creasing international trade to meet an insatiable demand for grouper poses a particularly major threat. The workshop outcome serves as another reminder of the need for sustainable fishing and consumption of important fish species. The threatened groupers are naturally vulnerable to over-fishing, and the...

Living with water scarcity -- world must act now

...nce on animal products. In China, per capita meat demand has quadrupled over the last 30 years, and in Indi...oming increasingly popular ?meaning an accelerated demand for more water to grow more food. Growing cities take more water, and environmental concerns are ri...

Overfishing large sharks impacts entire marine ecosystem, shrinks shellfish supply

...ed in recent decades to meet the growing worldwide demand for shark fins and meat." Sharks are targeted in numerous fisheries, and they also are snagged as bycatch in fisheries targeting tunas and swordfish in both U.S. and high seas fisheries. As many as 73 million sharks are killed worldwide each yea...

Triple threat: World fin trade may harvest up to 73 million sharks per year

...finning trade has grown over the past few years as demand has surged beyond sustainable levels for slow-to-p... trade appears to be keeping pace with the growing demand for seafood--up five percent per year in mainland China. Determining whether shark populations can ...

Edible coatings will be the packaging of the future

The growing demand by consumers for healthier and more ecological foods has driven researchers to develop new systems of packaging that prolong the useful life of the products and that are, at the same time, recyclable. Protection is currently carried out with a mixtur...

How mammals fuel milk production may have implications for cancer

...gene might be important in the increased synthetic demand for lipid during lactation. To further investigate, in the current study, the researchers examined mice lacking either Akt1 or the related gene Akt2, which are expressed in the same areas of the mammary gland at distinct developmental stages. Whil...

New technology to speed up research into Huntington's disease

... as learning, because most traditional experiments demand a level of physical performance that the mice cannot deliver due to the effect of the disease on their motor abilities. The automated screen developed by Cambridge scientists provides a simple means of assessing cognition, in a way that requires ...

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

...since 1750. It turns out that the international demand for rice is one of the main drivers of methane production on the planet. Studies have shown that rice farming contributes between 10 and 25 percent of global methane emissions, thanks in large part to methanogenic archaea, which crank out tons of met...

End of deforestation in view? Experts advance new way to size up global forest resources

...unication, people help the transition by lessening demand for wood products." Anticipating impacts of expanding global trade The authors note that it's possible to sustain a large commercial harvest and expand "growing stock" at the same time. Says economist Dr. Sedjo: "The USA gained growing st...

Rising ocean temperatures, pollution have oysters in hot water

...m did their study. Warm water increases energy demand The researchers divided oysters into three groups. One group was acclimated to water that was 20° C (68°F), one to 24°C (75°F) and a final group to 28°C (82°F). All three temperatures are within the range that oysters are exposed to in their natu...

Developing uses for sugar-cane bagasse: Biotechnology applied to the paper industry

...manufacturing paper pulp is wood. However, growing demand in the paper industry, at a time of dwindling forest resources, have compelled the sector to turn to other sources of raw materials, such as cereal straw, reeds, bamboo or sugar-cane bagasse. This residue, obtained after crushing of the cane, is al...

For Pacific white shrimp, gender matters when competing for food

...farming. As the industry tries to meet the growing demand for shrimp and shrimp-based products, identifying shrimp that grow more efficiently will be an important tool to maximizing production. ...

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