Woolly Mammoth Gene Study Changes Extinction Theory:
A large genetic study of the extinct woolly mammoth has revealed that the species was not one large homogenous group, as scientists previously had assumed, and that it did not have much genetic diversity.
Fossils Found In Tibet Revise History Of Elevation, Climate:
About 15,000 feet up on Tibet's desolate Himalayan-Tibetan Plateau, an international research team led by Florida State University geologist Yang Wang was surprised to find thick layers of ancient lake sediment filled with plant, fish and animal fossils typical of far lower elevations and warmer, wetter climates.
The Symbolic Monkey? Animals Can Comprehend And Use Symbols, Study Of Tufted Capuchins Suggests:
From paintings and photographs to coins and credit cards, we are constantly surrounded by symbolic artefacts. The mental representation of symbols -- objects that arbitrarily represent other objects -- ultimately affords the development of language, and certainly played a decisive role in the evolution of our hominid ancestors. Can other animal species also comprehend and use symbols? Some evidence suggests that apes, our closest relatives, can indeed use symbols in various contexts. However, little is known about the symbolic competence of phylogenetically more distant species.
Early Humans Experimented To Get Bow And Arrow Just Right, Findings Suggest:
In today's fast-paced, technologically advanced world, people often take the innovation of new technology for granted without giving much thought to the trial-and-error experimentation that makes technology useful in everyday life. When the "cutting-edge" technology of the bow and arrow was introduced to the world, it changed the way humans hunted and fought. University of Missouri archaeologists have discovered that early man, on the way to perfecting the performance of this new weapon, engaged in experimental research, producing a great variety of projectile points in the quest for the best, most effective system.
Unique Acoustic System Protects Manatees From Injuries And Death:
Researchers at Harbor Branch Oceanographic Institute at Florida Atlantic University have developed and improved upon a unique acoustic system designed to keep manatees from being injured or killed by flood gates and boat locks. Locks are used on sections of a canal or river that may be closed off by gates to control the water level to enable the raising and lowering of boats passing through.
Scientists are watching a small group of neurons that enable sexual maturity and fertility make a critical journey: from where they form, near the developing nose, to deep inside the brain.
Moderate Exercise Can Improve Sleep Quality Of Insomnia Patients:
An acute session of moderate aerobic exercise, but not heavy aerobic or moderate strength exercises, can reduce the anxiety state and improve the sleep quality of insomnia patients, according to a research abstract that will be presented on June 11 at SLEEP 2008, the 22nd Annual Meeting of the Associated Professional Sleep Societies (APSS).
University Experts Dispute Hawk-eye's Wimbledon Line Call:
Ahead of Wimbledon fortnight (23 June to 6 July), researchers from Cardiff University are advising that sports decision aids such as the Hawk-Eye system should come with a 'health' warning attached.
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