Tuesday, January 30, 2007

Scientists have uncovered the largest Neolithic settlement in the United Kingdom at the Durrington Walls and believe that the village was inhabited by the people who built the Stonehenge monument.

Scientists say that the village was built around 2,600 B.C., roughly when Stonehenge was believed to have been constructed, and housed over 100 people.

Inside the areas which would have been the interior of houses at the time, scientists also found outlines of what they think were beds and cupboards or dressers. Pieces of pottery and “filthy” rubbish around the site. Animal bones, arrowheads, stone tools and other relics were also discovered.

“We’ve never seen such quantities of pottery and animal bone and flint. In what were houses, we have excavated the outlines on the floors of box beds and wooden dressers or cupboards,” said Sheffield University archaeologist Mike Parker Pearson.

So far, the dig has revealed at least 8 houses roughly 14-16 feet square, but scientists say that they think there may have been at least 25 altogether.

The site was likely to have been occupied only seasonally rather than year-round and evidence suggests that a lot of “partying” went on at the location.

“The animal bones are being thrown away half-eaten. It’s what we call a feasting assemblage. This is where they went to party – you could say it was the first free festival. The rubbish isn’t your average domestic debris. There’s a lack of craft-working equipment for cleaning animal hides and no evidence for crop-processing,” added Pearson.

The Durrington Walls are approximately 2 miles from the Stonehenge site.

Thursday, June 23, 2011

NASA’s Cassini–Huygens spacecraft has discovered evidence for a large-scale saltwater reservoir beneath the icy crust of Saturn’s moon Enceladus. The data came from the spacecraft’s direct analysis of salt-rich ice grains close to the jets ejected from the moon. The study has been published in this week’s edition of the journal Nature.

Data from Cassini’s cosmic dust analyzer show the grains expelled from fissures, known as tiger stripes, are relatively small and usually low in salt far away from the moon. Closer to the moon’s surface, Cassini found that relatively large grains rich with sodium and potassium dominate the plumes. The salt-rich particles have an “ocean-like” composition and indicate that most, if not all, of the expelled ice and water vapor comes from the evaporation of liquid salt-water. When water freezes, the salt is squeezed out, leaving pure water ice behind.

Cassini’s ultraviolet imaging spectrograph also recently obtained complementary results that support the presence of a subsurface ocean. A team of Cassini researchers led by Candice Hansen of the Planetary Science Institute in Tucson, Arizona, measured gas shooting out of distinct jets originating in the moon’s south polar region at five to eight times the speed of sound, several times faster than previously measured. These observations of distinct jets, from a 2010 flyby, are consistent with results showing a difference in composition of ice grains close to the moon’s surface and those that made it out to the E ring, the outermost ring that gets its material primarily from Enceladean jets. If the plumes emanated from ice, they should have very little salt in them.

“There currently is no plausible way to produce a steady outflow of salt-rich grains from solid ice across all the tiger stripes other than salt water under Enceladus’s icy surface,” said Frank Postberg, a Cassini team scientist at the University of Heidelberg in Germany.

The data suggests a layer of water between the moon’s rocky core and its icy mantle, possibly as deep as about 50 miles (80 kilometers) beneath the surface. As this water washes against the rocks, it dissolves salt compounds and rises through fractures in the overlying ice to form reserves nearer the surface. If the outermost layer cracks open, the decrease in pressure from these reserves to space causes a plume to shoot out. Roughly 400 pounds (200 kilograms) of water vapor is lost every second in the plumes, with smaller amounts being lost as ice grains. The team calculates the water reserves must have large evaporating surfaces, or they would freeze easily and stop the plumes.

“We imagine that between the ice and the ice core there is an ocean of depth and this is somehow connected to the surface reservoir,” added Postberg.

The Cassini mission discovered Enceladus’ water-vapor and ice jets in 2005. In 2009, scientists working with the cosmic dust analyzer examined some sodium salts found in ice grains of Saturn’s E ring but the link to subsurface salt water was not definitive. The new paper analyzes three Enceladus flybys in 2008 and 2009 with the same instrument, focusing on the composition of freshly ejected plume grains. In 2008, Cassini discovered a high “density of volatile gases, water vapor, carbon dioxide and carbon monoxide, as well as organic materials, some 20 times denser than expected” in geysers erupting from the moon. The icy particles hit the detector target at speeds between 15,000 and 39,000 MPH (23,000 and 63,000 KPH), vaporizing instantly. Electrical fields inside the cosmic dust analyzer separated the various constituents of the impact cloud.

“Enceladus has got warmth, water and organic chemicals, some of the essential building blocks needed for life,” said Dennis Matson in 2008, Cassini project scientist at NASA’s Jet Propulsion Laboratory in Pasadena, California.

“This finding is a crucial new piece of evidence showing that environmental conditions favorable to the emergence of life can be sustained on icy bodies orbiting gas giant planets,” said Nicolas Altobelli, the European Space Agency’s project scientist for Cassini.

“If there is water in such an unexpected place, it leaves possibility for the rest of the universe,” said Postberg.

Wednesday, June 1, 2005

The University of California, Berkeley announced that one of its graduate students, Michael Park, rediscovered on May 24 the Mount Diablo buckwheat, a plant not sighted since 1936 and believed to have been extinct.Found nearly 30 miles east of San Francisco, Park [aged 35] identified the small pink flowering plant said to resemble baby’s breath during a routine visit to the mountain. He is currently pursuing his doctorate in integrative biology.

The significance of the find drew comparisons to the recent discovery of the Ivory-billed woodpecker in Arkansas earlier this year in April. The exact location of the flowering plant is, for now, being kept secret. Several botanists have confirmed it along with the nearly dozen or so other plants.

The property is being preserved by the Save Mount Diablo conservation group operating in the Mount Diablo State Park.

Wednesday, November 4, 2015

The Volkswagen emissions scandal continued yesterday with the company announcing 800,000 mainly diesel vehicles may also be affected by carbon dioxide emissions problems.

The company stated “the safety of the vehicles is in no way compromised”. They estimated potentially this could cost them €2bn on top of the €6.7bn set aside to pay for the cost of correcting 11 million cars affected when the scandal broke, in addition to fines by regulators.

This follows Monday’s revelation that the emissions scandal has affected up to 10,000 vehicles sold in the USA by brands in the Volkswagen group, although the company refutes the allegation. The United States Environmental Protection Agency (EPA), the regulatory body which has been investigating Volkswagen, claims the company fitted a number of recent Audi, Porsche, and Volkswagen models with technology that initiates secret components during emission tests to ensure the results are favourable.

The scandal began with damaging revelations that the car manufacturer has been using illegal software to enable diesel cars to cheat on mandatory emissions tests. This lead to a public apology on September 20 by then-chief executive Martin Winterkorn and the promise of an outside inquiry. He then resigned on September 23, and was replaced by Matthias Müller. The new allegation about Porsche is of particular concern for Müller, because he had previously been in charge of Porsche.

The company is expected to foot the bill for the recall of close to 500,000 VW and Audi cars affected at the time. There is also the possibility of Volkswagen having to pay federal fines of up to US$18 billion dollars because the US Clean Air Act sets a maximum fine of US$37,500 for each vehicle that contravenes the requirements of the Act.

An investigation into alleged breaches of environmental law was originally initiated on the advice of the International Council on Clean Transportation, a European non-governmental organisation. The EPA requested tests be carried out by West Virginia University, where the secret software was discovered.

The software, known as a “defeat device”, enabled cars to identify when they were being tested and to switch on the emission control system. The devices may have been adding urea to the car exhaust because that would reduce the amount of nitrogen dioxide. The car would release a fraction of the nitrogen oxide compared to when they were being driven normally. Emissions of nitrogen oxide contribute to smog and are thought to have caused a rise in respiratory illnesses like asthma.

Monday, June 5, 2006

British doctors have successfully transplanted a beating heart into the chest of a 58-year old man, the first operation of its kind in the United Kingdom.

The “trial” surgery was performed at Papworth Hospital just outside of London, England in Cambridge. The operation could be “equivalent if not superior” to the current transplanting methods, doctors said. The method has only been performed two other times, in Germany.

Usually hearts would be injected with potassium, which stopped the heart from beating, after which it would be covered with ice. This put the heart in “suspended animation” but gave doctors only a six-hour window to examine and transplant, doctors said.

“Normally the heart is in suspended animation but they still start to deteriorate,” said Professor Bruce Rosengard, head of the team of doctors who operated on the man.

The new method involves connecting the heart to a machine that pumps warm, oxygen enriched blood through the heart. The heart is able to keep beating with this method. The new process allows surgeons to look more closely and longer at the heart for any signs of damage. It also allows them to find a match for whoever may need it.

“Once hearts are hooked up to the device, which takes about 20 minutes, any deterioration is fully reversed. If we look at resuscitating hearts that are currently unusable, the number of transplants could be tripled or quadrupled,” added Rosengard. “The goal of this trial is to demonstrate that this is at least equivalent if not superior,” he added.

The director of transplants in the United Kingdom Chris Rudge also says that doctors are working on using the same new method with different human organs.

“In the longer term it is not just hearts that can be handled by such systems but other organs too, particularly the liver,” said Rudge.

The 58-year old man is doing “extremely well. At his exam one week after the operation, all his functions were absolutely normal,” Rosengard said.

At least 19 more operations are planned in the U.K. and in Germany.

Sunday, January 27, 2008

Viktor Schreckengost, the father of industrial design and creator of the Jazz Bowl, an iconic piece of Jazz Age art designed for Eleanor Roosevelt during his association with Cowan Pottery died yesterday. He was 101.

Schreckengost was born on June 26, 1906 in Sebring, Ohio, United States.

Schreckengost’s peers included the far more famous designers Raymond Loewy and Norman Bel Geddes.

In 2000, the Cleveland Museum of Art curated the first ever retrospective of Schreckengost’s work. Stunning in scope, the exhibition included sculpture, pottery, dinnerware, drawings, and paintings.

Sunday, November 5, 2006

On November 2, Ted Haggard resigned from the presidency of the National Association of Evangelicals and his pastorship in the New Life Church after allegations that he repeatedly engaged in homosexual sex with a prostitute (Mike Jones) and used methamphetamine.

Haggard, a critic of gay marriage and homosexuality, is a leading social conservative voice. Author Jeff Sharlet reported that Haggard “talks to. . . Bush or his advisers every Monday” and opines that “no pastor in America holds more sway over the political direction of evangelicalism.”

In his church, Haggard preached “we don’t have to debate about what we should think about homosexual activity, it’s written in the Bible.”

On Wednesday Haggard denied knowing the male escort, Jones, but admitted Friday that he had summoned the escort to give him a massage in a Denver hotel room and bought methamphetamine from him. He then followed up and said, “I was tempted, I bought it, but I never used it.”