Census of Marine Life historians detail collapse of bluefin tuna population off northern Europe
... ... Tuna Past...Time-lapse recordings reveal why IVF embryos are more likely to develop into twins
Lyon, France: Evidence gathered from time-lapse recordings of the formation of early embryos (blastocysts) in the laboratory has revealed why embryos created via IVF and undergoing extended culture are more likely to develop into twins than those created via natural conception. Furthermore, the research has shown that the culture in which the IVF embryos are formed is possibly responsible for th...Mechanisms involved with tumor relapse identified
... ......New compound prevents alcoholic behavior, relapse in animals by blocking stress response
... The new, synthetic compound, known as MTIP, also muted the anxiety that typically develops in rats experiencing the equivalent of a hangover. Such stress is linked with higher levels of a brain chemical called corticotropin-releasing factor (CRF), which is also thought to trigger relapse in rats that have developed a long-term dependency on al...Antarctic marine explorers reveal first biological changes after collapse of polar ice shelves
... While their families at home in 14 countries were enjoying New Year's dinners, experts on the powerfu...Climate changes, Cod collapse have altered North Atlantic ecosystems
Ecosystems along the continental shelf waters of the Northwest Atlantic Ocean, from the Labrador Sea south of Greenland all the way to North Carolina, are experiencing large, rapid changes, reports a Cornell oceanographer in the Feb. 23 issue of Science. ... While some scientists have pointed to the decline of cod from overfishing as the main reason for the shifting ecosystems, the article empha...Ongoing collapse of coral reef shark populations
... Reef sharks are so-called apex predators on tropical coral reefs and are therefore of significant potential importance to the functioning of coral reef ecosystems....Researchers identify cells that make relapse inevitable in acute lymphoblastic leukemia
... ... The discovery...By 2048 all current fish, seafood species projected to collapse
... "Species have been disappearing from ocean ecosystems and this trend has recently been accelerating," said lead author Boris Worm. "Now we begin to see some of the consequences. For example, if the long-term trend continues, all fish and seafood species are projected to collapse within my lifetime -- by 2048." Worm is an assistant professor of marine conservation biology at Dalh...Study links receptor to stress-induced alcohol relapse
......Brain enzyme treatment relieves memory lapse in Alzheimer's mice
... Treatments that elevate the protein, known as ubiquitin C-terminal hydrolase L1 (Uch-L1), might therefore have potential as a new therapy for Alzheimer's disease, according to the...Discovering an ecosystem beneath a collapsed Antarctic ice shelf
WASHINGTON--The chance discovery of a vast ecosystem beneath the collapsed Larsen Ice Shelf will allow scientists to explore the uncharted life below Antarctica's floating ice shelves and further probe the origins of life in extreme environments. Researchers discovered the sunless habitat after a recent underwater video study examining a deep glacial trough in the northwestern Weddell Sea followi...Did humans cause ecosystem collapse in ancient Australia?
Washington, D.C. Massive extinctions of animals and the arrival of the first humans in ancient Australia may be linked, according to scientists at the Carnegie Institution, University of Colorado, Australian National University, and Bates College.* The extinctions occurred 45,000 to 55,000 years ago. The researchers traced evidence of diet and the environment contained in ancient eggshells and wo...Asthma relapse in children common, possible risk factors identified
(NORTHBROOK, IL, March 7, 2005) - One-third of children with asthma who go into remission by the age of 18 will relapse and redevelop asthma by the time they are 26, says a new study published in the March issue of CHEST, the peer-reviewed journal of the American College of Chest Physicians. The findings also suggest that children with certain common allergies, such as house dust mite sensitivit...Self-organization and vegetation collapse in salt marsh ecosystems
It is a premise in ecology that undisturbed ecosystems are relatively stable, and hence that sudden changes in ecosystem are likely to result from external, mostly human influences. Johan van de Koppel, Daphne van der Wal, Jan P. Bakker, and Peter M. J. Herman present a combined theoretical and empirical study indicating that natural processes within salt-marsh ecosystems can lead to ecosystem de...US researchers warn of possible fertility risk to men using laptop computers on their laps
US fertility experts (Thursday 9 December) warned teenage boys and young men to consider limiting the time that they use laptop computers positioned on their laps, as long-term use may affect their fertility.... ...The increasing popularity of laptop computers (LC), coupled with existing evidence that elevated scrotal temperature can result in sperm damage, prompted researchers from the Sta...Time-lapse movies show brain cells move like a two-stroke engine
Following the often-quoted advice of Yogi Berra -- "You can observe a lot by just watching" -- Rockefeller University scientists show that nerve cells in the developing brains of humans and other mammals move in a two-part "step" led by a structure within the cell called the centrosome. Once the centrosome, the key organizing point for the cell's internal skeleton, moves forward, the cell nucleus...