In a study published in Nature, researchers describe that rock fragments produced unintentionally today by primates in Serra da Capivara National Park in Brazil resemble tools made deliberately 2.6 million years ago by ancestors of humans.
University of Utah researchers will be among the approximately 24,000 scientists convening in San Francisco for the annual Fall Meeting of the American Geophysical Union Dec. 12-16. Below are summaries of select presentations at the meeting, along with the time and date of the presentation and primary contact information. All times are in Pacific Standard Time.
A new report identifies the genetic mechanism responsible for evolutionary adaptation to toxic pollution observed in wild Atlantic killifish populations.
NASA-NOAA's Suomi NPP satellite captured an image of Tropical Cyclone Vardah that showed strongest storms expanding west of the center.
Researchers from Charité - Universitätsmedizin Berlin have found that human ALOX15 appears to have developed a much higher capacity to stimulate the production of these lipid mediators than the enzyme variant found in lower primates.
In the atmosphere, feldspar particles act as ice nuclei that make ice crystals grow in clouds and enable precipitation. The reason was found by researchers of Karlsruhe Institute of Technology (KIT) and University College London (UCL) with the help of electron microscopy observations and molecular dynamics computer modeling. The ice nucleus proper is a quasi-hidden crystal surface of the feldspar that is exposed at surface defects only. The researchers present their findings in Science.
Five million years ago, the Colorado River met the Gulf of California near the present-day desert town of Blythe, California. The evidence, say University of Oregon geologists, is in the sedimentary rocks exposed at the edges of the valley where the river flows today.
Researchers have found that monkeys known as macaques possess the vocal anatomy but not the brain circuitry to produce human speech. The findings suggest that human speech stems mainly from the unique evolution and construction of our brains, and is not linked to vocalization-related anatomical differences between humans and primates. Scientists have long debated if -- and to what extent -- differences between the human and primate vocal anatomy allow people to speak but not monkeys and apes.
On July 17, more than 70 million tons of ice broke off from the Aru glacier in the mountains of western Tibet and tumbled into a valley below, taking the lives of nine nomadic yak herders living there. Scientists have done a kind of forensic analysis of the disaster, and found that the cause is likely climate change.
Turning meadow restoration into cleaner air is the goal of researchers at the University of Nevada, Reno. Their Soil Science Laboratory recently partnered with the Earthwatch Institute to better understand how restoration and plant communities relate to the soil carbon in Sierra Nevada mountain meadows. The team aims to develop a model that can predict how much carbon is sequestered in a meadow. The data may be used by the State of California to sell carbon credits through their Cap and Trade program.