Scientists have found the fossilized remains of the brain of the world’s earliest known predators, from a time when life teemed in the oceans but had not yet colonized the land.
An international team of paleontologists has identified the exquisitely preserved brain in the fossil of one of the world’s first known predators that lived in the Lower Cambrian, about 520 million years ago. The discovery revealed a brain that is surprisingly simple and less complex than those known from fossils of some of the animal’s prey. (more…)
Ethnic segregation in nations straddling the world’s highest terrains may be reinforced by the biological tolerance different peoples have to altitude, according to one of the first studies to examine the effect of elevation on ethnic demographics.
Research from Princeton University published in the journal Applied Geography suggests that people native to low-lying areas can be naturally barred from regions such as the Tibetan Plateau, the Andes or the Himalayas by altitude sickness, which is caused by low oxygen concentration in the air and can be life-threatening. As a result, the homogeny of the local population can increase with elevation. In nations shared by people of high- and lowland extractions, this separation can potentially increase ethnic tension. (more…)
UCLA life scientists, working with colleagues in China, have discovered a new method to quickly assess plants’ drought tolerance. The method works for many diverse species growing around the world. The research, published in the journal Methods in Ecology and Evolution, may revolutionize the ability to survey plant species for their ability to withstand drought, said senior author Lawren Sack, a UCLA professor of ecology and evolutionary biology.
“This method can be applied rapidly and reliably for diverse species across ecosystems worldwide,” he said of the federally funded research by the National Science Foundation.(more…)
New research by UCLA life scientists could lead to predictions of which plant species will escape extinction from climate change.
Droughts are worsening around the world, posing a great challenge to plants in all ecosystems, said Lawren Sack, a UCLA professor of ecology and evolutionary biology and senior author of the research. Scientists have debated for more than a century how to predict which species are most vulnerable.
Sack and two members of his laboratory have made a fundamental discovery that resolves this debate and allows for the prediction of how diverse plant species and vegetation types worldwide will tolerate drought, which is critical given the threats posed by climate change, he said. (more…)
In 2010, China mined the record amount of gold in the world. The production volume of nonferrous metals in China amounted to 340.88 tons, which is 8.57% higher than a year earlier, and continues to grow. In recent years, China has consistently increased the amount of its gold reserves. Nevertheless, experts believe that China has a long way to go to reach the level of the world leading economies.
According to the China Gold Association, in 2007 China ranked first in terms of gold mining. It outran South Africa and is holding this position to this day. Starting 2004, the volume of production of the precious metal in China has been steadily growing. In 2009 it amounted to 313.98 tons. The volume of the gold imported by China within ten months of 2010 amounted to 209.72 tons, which is six times more than the year before, Rosbalt reported. (more…)
