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Rare skull of fossil ape discovered

Fossilized Cranium
© XinhuaA six-million-year-old fossilized cranium of a juvenile ape has been unearthed in southwest China's Yunnan Province.
Kunming - A six-million-year-old fossilized cranium of a juvenile ape has been unearthed in Southwest China's Yunnan province, a rare find paleontologists hope may help unravel the mystery of human origins.

The remains is only the second recovered cranium belonging to a juvenile ape inhabiting Eurasia in the Miocene that dates back to 23 to 5 million years ago, Ji Xueping, a researcher who led the study, told a news conference on Thursday.

"The skull boasts great significance in research on our ancestors, as the time when the primate lived was close to that of the first humans, estimated at between 7 million to 5 million years ago," said Ji, with Yunnan Institute of Cultural Relics and Archaeology.

"Africa has found a number of fossils of ancient primates of that age, but such finds are scarce in Asia. From this perspective, the discovery is quite important," said Lu Qingwu, a professor with Institute of Vertebrate Paleontology and Paleoanthropology, Chinese Academy of Sciences.

A detailed description of the find was published in the Chinese Sciences Bulletin last month, nearly four years after Ji and his fellows found it in a pit owned by a brick factory in Shuitangba community, Zhaotong city.

The age of the fossil ape, a member of the genus Lufengpithecus, was identified as between 6.2 to 6.1 million years ago in the late Miocene, the youngest among all ancient primates previously detected in Yunnan.

The well-preserved cranium that has maintained most of the facial skeleton is relatively complete and largely undistorted, providing valuable information about the morphology and growth of Lufengpithecus, according to the study.

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What's in urine? 3,000 chemicals and counting

Urine
© Shutterstock
Looking for an encyclopedia of pee? Scientists have laid out the entire chemical composition of human urine, revealing that more than 3,000 compounds are found in the fluid, and have published it all in an online database.

In the study, which took seven years to complete, the researchers found that at least 3,079 compounds can be detected in urine. Seventy-two of these compounds are made by bacteria, while 1,453 come from the body itself. Another 2,282 come from diet, drugs, cosmetics or environmental exposure (some compounds belong to more than one group).

"Urine is an incredibly complex biofluid. We had no idea there could be so many different compounds going into our toilets," said study researcher David Wishart, professor of biology and computing science at the University of Alberta.

The complete list of all metabolites that can be detected in human urine using current technologies has been placed into an online public database called the Urine Metabolome Database.The word metabolome refers to the complete collection of metabolites, which are the products of metabolism and include hormones, vitamins and other molecules.

Magic Wand

Wide range of differences, mostly unseen, among humans

Scientists investigate the functional diversity of proteins.

No two human beings are the same. Although we all possess the same genes, our genetic code varies in many places. And since genes provide the blueprint for all proteins, these variants usually result in numerous differences in protein function. But what impact does this diversity have? Bioinformatics researchers at Rutgers University and the Technische Universitaet Muenchen (TUM) have investigated how protein function is affected by changes at the DNA level. Their findings bring new clarity to the wide range of variants, many of which disturb protein function but have no discernible health effect, and highlight especially the role of rare variants in differentiating individuals from their neighbors.

The slightest changes in human DNA can result in an incorrect amino acid being incorporated into a protein. In some cases, all it takes is for a single base to be substituted in a person's DNA, a variant known as a single nucleotide polymorphism (SNP). "Many of these point mutations have no impact on human health. However, of the roughly 10,000 'missense' SNPs in the human genome - that is, SNPs affecting the protein sequence - at least a fifth can change the function of the protein," explains Prof. Yana Bromberg of the Department of Biochemistry and Microbiology at Rutgers University. "And in some cases, the affected protein is so important and the change so large that we have to wonder why the person with this mutation is still healthy."

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A change is in the (Interstellar) wind

Interstellar Wind
© NASA/Goddard/Adler/University of Chicago/Wesleyan UniversityCosmic voyager. Moving at some 23 kilometers per second, the solar system journeys through a cluster of thin gas clouds.
As Earth and the other planets orbit the sun, the solar system itself travels through space. Its slow journey is taking it though a wispy expanse of gas called the Local Interstellar Cloud. Now, astronomers have discovered signs of potential turbulence in the cloud, indicated by a shift in direction of helium atoms that flow into the solar system. If the shift is real and continues for hundreds to thousands of years - a dicey extrapolation - it could be a harbinger of more dramatic changes in our solar system, notes study co-author David McComas of the Southwest Research Institute in San Antonio.

The finding, which McComas, Priscilla Frisch of the University of Chicago, and their colleagues report in the 6 September issue of Science, could foreshadow a change in the heliosphere, the vast bubble that shields the solar system from harmful cosmic rays. The heliosphere consists of charged particles blown out by the sun in the so-called solar wind. The size and shape of the heliosphere depends on the balance between the outward push of the solar wind and the inward pressure from gas in the Local Interstellar Cloud - the interstellar wind.

Bizarro Earth

Largest volcano on Earth lurks beneath Pacific Ocean

Tamu Massif
© William SagerA 3D map of Tamu Massif, the world's biggest volcano.
The world's largest volcano lurks beneath the Pacific Ocean, researchers announced today (Sept. 5) in the journal Nature Geoscience.

Called the Tamu Massif, the enormous mound dwarfs the previous record holder, Hawaii's Mauna Loa, and is only 25 percent smaller than Olympus Mons on Mars, the biggest volcano in Earth's solar system, said William Sager, lead study author and a geologist at the University of Houston.

"We think this is a class of volcano that hasn't been recognized before," Sager said. "The slopes are very shallow. If you were standing on this thing, you would have a difficult time telling which way was downhill."

Tamu is 400 miles (650 kilometers) wide but only about 2.5 miles (4 km) tall. It erupted for a few million years during the early Cretaceous period, about 144 million years ago, and has been extinct since then, the researchers report.

Bell

More fracking headaches as earthquake evidence grows

Earthquake damaged road
© Martin Luff
It looks like more trouble is looming ahead for communities that host fracking operations. Two new studies have linked fracking-related operations to earthquakes in Texas and Ohio, and a recently settled lawsuit in Arkansas indicates that swarms of tiny earthquakes can damage surface structures. Add earthquakes to a list that already includes water contamination and air pollution risks, and it becomes clear that a more effective regulatory platform is needed to protect existing communities from the impacts of fracking.

The Fracking Explosion

Fracking is short for hydrofracturing, a drilling method that releases oil or gas from shale formations by pumping a chemical brine underground. Somewhat ironically, the method was originally developed by federal researchers to aid the geothermal industry.

As an "unconventional" oil and gas drilling method, fracking was not in widespread use in the US until recent years, and regulatory agencies have been scrambling to play catchup as evidence of water and air impacts piles up.

Red Flag

Fracking practices to blame for Ohio earthquakes

Fracking and earthquakes
© USGSThis map shows the intensity of shaking in the area of a magnitude-3.9 earthquake that struck near Youngstown, Ohio, on Dec. 31, 2011. Research has linked this earthquake to the underground injection of wastewater from fracking.
Wastewater from the controversial practice of fracking appears to be linked to all the earthquakes in a town in Ohio that had no known past quakes, research now reveals.

The practice of hydraulic fracturing, or fracking, involves injecting water, sand and other materials under high pressures into a well to fracture rock. This opens up fissures that help oil and natural gas flow out more freely. This process generates wastewater that is often pumped underground as well, in order to get rid of it.

A furious debate has erupted over the safety of the practice. Advocates claim fracking is a safe, economical source of clean energy, while critics argue that it can taint drinking water supplies, among other problems.

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The Drake equation revisited: An interview with Sara Seager

Sara Seager
© MITSara Seager, expert planet hunter.
Planet hunters keep finding distant worlds that bear a resemblance to Earth. Some of the thousands of exoplanet candidates discovered to date have similar sizes or temperatures. Others possess rocky surfaces and support atmospheres. But no world has yet provided an unambiguous sign of the characteristic that still sets our pale blue dot apart: the presence of life.

That may be about to change, says exoplanet expert Sara Seager at the Massachusetts Institute of Technology in Cambridge, Massachusetts. Upcoming missions such as the Transiting Exoplanet Satellite Survey and the James Webb Space Telescope, both due to launch around 2018, should be able to find and characterize Earth-like planets orbiting small stars.

Spotting signs of life on those planets will be possible because of progress in detecting not only planets, but their atmospheres as well. When a planet passes in front of its host star, atmospheric gases reveal their presence by absorbing some of the starlight. Oxygen, water vapor, or other gases that do not belong on dead worlds could very well provide the first evidence of life elsewhere.

In 1961, astronomer Frank Drake developed an equation that summarizes the main factors to contemplate in the question of radio-communicative alien life. These factors include the number of stars in our galaxy that have planets, and the length of time advanced alien civilizations would be releasing radio signals into space.

Question

Mystery alignment of dying stars puzzles scientists

Bipolar planetary nebula
© NASA, ESA; Acknowledgement: Josh BarringtonThis image taken with the NASA/ESA Hubble Space Telescope shows an example of a bipolar planetary nebula. This object, which is known as Hubble 12 and also catalogued as PN G111.8-02.8, lies in the constellation of Cassiopeia.

Dying stars that are among the most beautiful objects in the universe tend to line up across the night sky, and astronomers aren't sure why.

These "cosmic butterflies" - actually a certain type of planetary nebula - all have their own formation histories, and they don't interact with each other. But something is apparently making them dance in step, scientists using NASA's Hubble Space Telescope and the European Southern Observatory's New Technology Telescope (NTT) have discovered.

"This really is a surprising find and, if it holds true, a very important one,"study lead author Bryan Rees, of the University of Manchester in the United Kingdom, said in a statement. "Many of these ghostly butterflies appear to have their long axes aligned along the plane of our galaxy. By using images from both Hubble and the NTT we could get a really good view of these objects, so we could study them in great detail."

Cloud Grey

Svensmark's cosmic ray theory of clouds and global warming looks to be confirmed

Clouds
© Unknown
Note: Between flaccid climate sensitivity, ENSO driving "the pause", and now this, it looks like the upcoming IPCC AR5 report will be obsolete the day it is released.

From a Technical University of Denmark press release comes what looks to be a significant confirmation of Svensmark's theory of temperature modulation on Earth by cosmic ray interactions. The process is that when there are more cosmic rays, they help create more microscopic cloud nuclei, which in turn form more clouds, which reflect more solar radiation back into space, making Earth cooler than what it normally might be. Conversely, less cosmic rays mean less cloud cover and a warmer planet as indicated here. The sun's magnetic field is said to deflect cosmic rays when its solar magnetic dynamo is more active, and right around the last solar max, we were at an 8000 year high, suggesting more deflected cosmic rays, and warmer temperatures. Now the sun has gone into a record slump, and there are predictions of cooler temperatures ahead This new and important paper is published in Physics Letters A. - Anthony