Interrupting chest compressions during resuscitation reduces the chances of heartbeat return after defibrillation. New research published in the open access journal BMC Medicine shows that for every second of a pause in compressions there is a 1% reduction in the likelihood of success.
A new series of mutations have been discovered that allow rats to resist the effects of the popular poison warfarin. Research published in the open access journal BMC Genetics describes eighteen new genetic changes found in rats from four continents.
Montreal, February 5, 2009 – It's not uncommon for students to consume energy drinks to increase their concentration as they study throughout the night. "Energy drinks are the coffee of a new generation," says Stéphanie Côté, nutritionist with Extenso, a Université de Montréal health and nutrition think-tank. "These drinks are made up of sugar and caffeine and can have a negative impact on health."
New Haven, Conn. — A missing link in the evolution of the front claw of living scorpions and horseshoe crabs was identified with the discovery of a 390 million-year-old fossil by researchers at Yale and the University of Bonn, Germany.
GALVESTON, Texas — Ever since scientists first proposed that our planet might be experiencing widespread climate change, concerns have been raised about its implications for the spread of arboviruses – viruses carried by arthropods such as mosquitoes, midges and ticks. However, while alterations in temperature and rainfall are important factors in making new territory hospitable to an invading arbovirus, many other forces also play significant parts in new patterns of viral emergence.
Despite the great cultural, physical, and genetic diversity found amongst the numerous West Central African human populations that are collectively designated as "Pygmies," a report published online on February 5th in Current Biology, a Cell Press publication, finds that they diverged from a single ancestral population just about 2,800 years ago.
Software designed by the University of Liverpool which automatically shuts down computer systems after usage, is saving large organisations up to £13,000 in electricity costs each month.
The team from Liverpool found that universities with PC centres in 24-hour libraries could be losing more than one million hours of unused computer power each month. Systems experts have developed new software called PowerDown, which works by automatically shutting computers down if left unused for half an hour.
"Knowledge of the sizes and shapes of asteroids is crucial to understanding how, in the early days of our Solar System, dust and pebbles collected together to form larger bodies and how collisions and re-accumulation have since modified them," says Marco Delbo from the Observatoire de la Côte d'Azur, France, who led the study.
GAINESVILLE, Fla. --- The largest snake the world has ever known -- as long as a school bus and as heavy as a small car -- ruled tropical ecosystems only 6 million years after the demise of the fearsome Tyrannosaurus rex, according to a new discovery published in the journal Nature.