With fewer than 300 northern right whales remaining, the seriously endangered species may face yet another obstacle to recovery. The right whale is regularly exposed to the neurotoxins responsible for paralytic shellfish poisoning (PSP) through feeding on contaminated zooplankton. These toxins could affect respiratory capabilities, feeding behavior, and ultimately the reproduction condition of the whale population.
In the current issue of the journal Harmful Algae, a team of scientists, led
Discovery could explain why light keeps us awake and may lead to new treatments for disorders such as jet-lag and SAD.
Researchers from Imperial College London, Johns Hopkins University, USA and Brown University, USA have discovered that melanopsin, a recently identified protein, plays a key role in a completely new light detection system in the eye.
Professor Russell Foster, from Imperial College London at the Charing Cross Hospital comments: “It had long been assumed that
Researchers are reporting progress in understanding whether a second light-sensing pathway in mammals indeed contributes to the detection of ambient light for controlling body functions.
In an article published in the January 10, 2003, issue of the journal Science, the researchers report that the molecule melanopsin is necessary in order for the pupil to constrict properly in response to light, a function termed the pupillary light reflex.
The latest findings by Howard Hughes Medi
Local fisheries part of bigger cycle affecting entire Pacific Ocean
In the late 1930s, Californias sardines supported the biggest fishery in the western hemisphere, with more than half a million tons of fish caught each year. By the mid-1950s, the sardines had virtually disappeared. Although fishing pressure may have played a part in this process, new research published in the current issue of Science indicates that the sardines demise was part of a 50-year cycle tha
A 12-year study of 38,077 male health professionals found that men who drank alcohol three or more days per week had a reduced risk of heart attack compared with men who drank less frequently. Men who drank less than one drink a day had similar risk reduction to those who drank three.
Many epidemiologic studies have reported that moderate drinking–for men two drinks a day–is associated with a reduced risk of heart disease. This study looked at the relationship between quantity and frequen
Using a state-of-the-art computer model of the lunar interior, geophysicists at the University of California, Berkeley, have shown that a mighty burp early in the moons history could account for some of its geologic mysteries.
The burp of hot rock, like a blob rising to the top of a lava lamp, would have lifted a blanket covering the moons core, allowing the core to cool quickly enough to produce a magnetic field.
The moon has long since cooled off and the global magne