Monday, September 22, 2008

Several mainstream news outlets have misstated and overstated a possible link between cellular phone use and decreased fertility in men. A single experiment, which has not yet been published in any peer reviewed journal or replicated by other scientists, observed an average decrease in sperm motility and an increase in free radicals among laboratory sperm samples that were exposed to radiation similar to the radiation produced by cellular phone use.

Dr. Ashok Agarwal of the Cleveland Clinic estimates the overall health impact of cellular phones as “very safe” and reassured a Cable News Network reporter that the research was too premature to advise lifestyle changes for the public. “Our study has not provided proof that you should stop putting cell phones in your pocket. There are many things that need to be proven before we get to that stage.” He noted that his own cell phone was in his trouser pocket while he was giving the interview. Dr. Agarwal is the lead researcher for the study and Director of the Center for Reproductive Medicine at the Cleveland Clinic.

Cell phone industry spokesman Joe Farren agreed with Dr. Agarwal’s assessment about the devices’ overall safety: “The weight of the published scientific evidence, in addition to the opinion of global health organizations, shows that there is no link between wireless usage and adverse health effects.”

The controlled experiment used sperm samples from thirty-two donors: twenty-three healthy men and nine men who had fertility problems. Sperm were then exposed to radiation for one hour at 850 megahertz, the most common frequency for cell phones in the United States. Dr. Agarwal’s study raises a possible concern that cell phones kept on belts or trouser pockets and used in conjunction with wireless bluetooth earpieces “could cause harmful effects due to the proximity of the phones and the exposure that they are causing to the gonads.” He also noted that follow-up research is needed to determine whether the body’s skin and other tissue affords protection from the potential damage.

Several news sources ran misleading reports that overstated the risk.

The Los Angeles Times asserted a fallacious causal relationship that Dr. Agarwhal had not drawn and ignored his opinions that cellular phones are safe and no change in phone use is necessary. Instead, the piece opened by ordering men to stop keeping cell phones in their pockets:

“Attention male cellphone users of reproductive age: Take that phone out of your pocket. Information published today suggests that the radio-frequency energy released by cellphones decreases sperm quality in men.”

Ciol News ran a similar account:

“Beware men! Do you have the habit of keeping your mobile phone in the pockets of your trousers while talking on hand-free? Or do clip the mobile to your belt while talking? If so you are doing that at the cost of your fertility, warns a recent study.”

Mobile Magazine went a step further, also alluding to previous media exaggerations about cellular phone dangers:

“Oh no! It seems that mobile phones are getting even more problematic than ever. After getting linked to everything from migraines to cancer, it seems that the radiation from cell phones is now being connected to stupid sperm. Yes, I’m talking about the little swimmers that lead into a conversation about the birds and the bees.”

Mobile Magazine also ended in a misleading manner with “I wonder if it’s healthier to put your phone in your shirt pocket instead,” failing to mention that Dr. Agarwal had addressed that concern and had called it an unnecessary precaution.

Not all news sources overplayed the findings. CNN and United Press International ran balanced reports that did not suggest dangers or precautions beyond the lead researcher’s conclusions.

Friday, October 10, 2008

In an attempt to speak with as many candidates as possible during the 2008 Canadian federal election, Wikinews has talked via email with David Sparrow. Sparrow is a candidate in Ontario’s Don Valley West riding, running under the New Democratic Party (NDP) banner. The riding was set to vote in a by-election on September 22, 2008, following the resignation of John Godfrey, but Stephen Harper’s sudden election call nulled that effort.

Also running in the Toronto riding are Liberal Rob Oliphant, Conservative John Carmichael, Green Georgina Wilcock, and Communist Catherine Holliday.

The following is an interview with Sparrow, conducted via email. The interview is published unedited, as sent to Wikinews.

Monday, February 8, 2010

The black box cockpit voice recorder from an Ethiopian Airlines flight that crashed into the Mediterranean several weeks ago, killing all on board, has been found by search crews. The flight data recorder had been recovered earlier in the day. The bodies of eight victims were recovered from what is believed to be fuselage.

“We found it and retrieved it about an hour ago today,” Lebanese army Brigadier Saleh Haj Suleiman said, as quoted by BusinessWeek. According to reports, the plane made a sharp turn and disappeared from the radar upon departure; Lebanese officials, however, say it’s too early to conclude the crash was due to pilot error.

The black box records communication data, technical information such as speed, altitude, etc., as well as conversation in the airplane cockpit, which could help investigators determine why the jet crashed.

The boxes will be transported to France to be analysed, according to officials.

Flight ET409, which had departed from Beirut, Lebanon, was bound for Addis Ababa in Ethiopia on January 25 when it crashed into the waters of the Mediterranean Sea several minutes after takeoff, in inclement weather. All ninety people aboard were killed.

Minister of Public Works and Transport Ghazi Aridi told Reuters, “The priority now is searching for the rest of the bodies of victims.” So far, the bodies of 23 victims have been recovered.

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.

A compilation of brief news reports for Monday, May 7, 2007.

A 30 meter section of a gas pipeline in Luka (near Kiev) in Ukraine has been destroyed by an explosion. Although supplies to Europe via this pipeline have stopped, Ukrainian Energy Minister Georgi E. Boyko said that supplies to Europe would not be affected.

“There are no changes in volumes of gas being transported,” Yuri Korolchuk said. “Volumes due to pass through the damaged section are being redirected through the Soyuz pipeline.”

Normal flows are reported in the Czech Republic, Hungary, Poland and Romania.

Sources

• “Blast damages pipeline in Ukraine” — Russia Today, May 8, 2007
• Natalya Zinets, Reuters. “Blast hits Ukraine gas pipeline” — The Scotsman, May 7, 2007

Copper prices are rising. Between record copper imports from China, and a mining strike in Peru, the prices have climbed to over $8100 (United States dollars) a tonne, for a gain of $575 dollars over the last week. However the upward trend is not new, it has been climbing for quite some time. In April 2003, the price of copper was under $2000 a tonne.

The metal market has been tending up due to growth in the Chinese industrial production. This trickles down to the local level, where the buying price at scrap yards is ever climbing, making scrap metal collection a more profitable endeavour for individual people using pick up trucks or other such vehicles to collect and cash in the scrap metal at metal buying yards. It can be collected via agreements with businesses, from the garbage, or, sometimes, by theft.

Copper prices fell today on the NYMEX commodity exchange from US$3.7545 per pound to US$3.7125 based on the July futures contract.

Sources

• “Copper up but crude oil down” — Financial Express, May 6, 2007
• Millie Munshi. “Metals Bubble Poised to Burst on Increasing Supplies” — Bloomberg L.P., May 7, 2007
• “Commodity Futures” — Bloomberg L.P., accessed May 7, 2007

One man was killed and another injured by an exploding backpack in the parking lot of the Luxor Hotel in Las Vegas, Nevada. The explosion happened at 4 a.m. PDT when the victim tried to remove a the object left on top of his car.

Agents from the Bureau of Alcohol, Tobacco, Firearms and Explosives (ATF) are on the scene. Aerial images did not show any apparent damage.

“We believe the victim was the intended target of this,” Bill Cassell said, spokesperson for the Las Vegas Metropolitan Police Department. “This is being treated as a homicide in which the weapon used to cause death is a non-traditional weapon.”

Both of the victims worked at the Luxor.

Sources

• Associated Press. “1 dead, 1 hurt in Las Vegas parking lot blast” — MSNBC, May 7, 2007
• “Explosion kills man in Vegas outside Luxor hotel” — Reuters, May 7, 2007