CT scans of fossil skull fragments may help researchers settle a long-standing debate about the evolution of Africa’s Australopithecus, a key ancestor of modern humans that died out some 1.4 million years ago.
The study, to be published in the Proceedings of the National Academy of Sciences, explains how CT scans shed new light on a classic evolutionary puzzle by providing crucial information about the internal anatomy of the face. (more…)
The males of two bipedal hominid species that roamed the South African savannah more than a million years ago were stay-at-home kind of guys when compared to the gadabout gals, says a new high-tech study led by the University of Colorado Boulder.
The team, which studied teeth from a group of extinct Australopithecus africanus and Paranthropus robustus individuals from two adjacent cave systems in South Africa, found more than half of the female teeth were from outside the local area, said CU-Boulder adjunct professor and lead study author Sandi Copeland. In contrast, only about 10 percent of the male hominid teeth were from elsewhere, suggesting they likely grew up and died in the same area. (more…)
*Brown Tide Culprit Uniquely Suited to Thrive in Environmentally Impacted Estuaries*
The microscopic phytoplankton Aureococcus anophagefferens, which causes devastating brown tides, may be tiny but it’s a fierce competitor.
In the first genome sequencing of a harmful algal bloom species, researchers found that Aureococcus’ unique gene complement allows it to outcompete other marine phytoplankton and thrive in human-modified ecosystems, which could help explain the global increases in harmful algal blooms (HABs). (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…)
GAINESVILLE, Fla. — The number of reported shark attacks last year increased worldwide but declined in Florida, according to the University of Florida’sInternational Shark Attack File annual report released today.
Ichthyologist George Burgess, director of the file housed at the Florida Museum of Natural History on the UF campus, said Florida typically has the highest number of attacks worldwide, but 2010 marked the state’s fourth straight year of decline. Florida led the U.S. with 13 reported attacks, but the total was significantly lower than the yearly average of 23 over the past decade. (more…)
A highly skillful and delicate method of sharpening and retouching stone artifacts by prehistoric people appears to have been developed at least 75,000 years ago, more than 50,000 years earlier than previously thought, according to a new study led by the University of Colorado at Boulder.
The new findings show that the technique, known as pressure flaking, took place at Blombos Cave in South Africa during the Middle Stone Age by anatomically modern humans and involved the heating of silcrete — quartz grains cemented by silica — used to make tools. Pressure flaking takes place when implements previously shaped by hard stone hammer strikes followed by softer strikes with wood or bone hammers are carefully trimmed on the edges by directly pressing the point of a tool made of bone on the stone artifact. (more…)
The victory of the Spaniards over the Dutch in the World Cup will help the economy, experts say.
The euphoria of the victory improves the mood of the population, and the population in a good mood begins to spend more money and shop more frequently.
