Thursday, September 21, 2006
300 Astronomers Will Not Use New Planet Definition
Author Robert Roy Britt
More than 300 astronomers have signed a petition denounced the IAU’s new planet definition that demotes Pluto. The petition states simply:
“We, as planetary scientists and astronomers, do not agree with the IAU’s definition of a planet, nor will we use it. A better definition is needed”
The petition, which began circulating right after last week’s vote, is one more sign that this whole debate is far from over. In another move today, the world’s largest group of planetary scientists issued a statement suggesting the definition would get worked over between now and the next IAU meeting in 2009.
While it might have seemed to the public and the press that Pluto’s demotion was a done deal (and I’m on record as saying the defintion should not be altered beyond minor tweaks to clarify) I would not bet against Pluto’s possible resurgence. Just as science promises to march forward, so too will all this bickering and posturing. And why not? It’s great fun, some of the best scientific theater of our generation.
You can see the petition’s signers here."
Friday, September 08, 2006
House approves bill to shutter horsemeat industry
Thursday, September 07, 2006
In USA Today:FDA approves artificial heart implant
The pump could benefit some of the roughly 8,000 people on waiting lists for the 2,000 donor hearts that become available each year. About 30% of those on the waiting lists die before a donor heart becomes available for transplant.
"This is the first artificial replacement organ that has achieved FDA approval," said Marvin Slepian, chief executive of Tucson-based SynCardia Systems, which makes the CardioWest mechanical heart.
"It will be popular in end-stage heart disease centers, where they see sick patients who have no other options," said Jack Copeland, a professor at the University of Arizona and a SynCardia founder. He said the company hopes to train doctors to implant the heart at four to six centers in the next year.
The CardioWest is a direct descendant of the Jarvik-7, implanted into dentist Barney Clark in 1982. That experiment and others that followed made worldwide headlines, but not for their success. Volunteers suffered strokes, bleeding, infections, clots and other catastrophic side effects, prompting the FDA to temporarily shut down the artificial heart program.
Two decades and countless prototypes later, doctors reported in August that the retooled heart had sustained 79% of 81 patients until they could obtain a transplant, compared with 46% of 35 patients who did not get the heart. The device was redesigned to reduce the risk of side effects.
"It's a laudable achievement," said Bud Frazier, chief of heart transplantation at Houston's Texas Heart Institute.
About 5 million people in the USA have hearts too weak to satisfy the body's demand for blood. Doctors diagnose 550,000 cases a year; about 300,000 people die each year. Roughly 50,000 of the most severe cases could benefit from a transplant.
To implant the CardioWest, surgeons remove the bottom half of the heart and stitch the device in its place. Patients remain in the hospital, tethered by hoses to a large, noisy pump.
Slepian says SynCardia is working on more portable hearts to serve as permanent replacements someday. Other companies are working on models, as well.
Slepian says the heart will cost $80,000 to $100,000. Medicare and insurance plans now reimburse a portion of the cost of lesser heart pumps, called ventricular assist devices. Medicare does not cover artificial hearts. Now that the CardioWest has been approved, Slepian says, that may change.
Saturday, September 02, 2006
MONEY Magazine: Top 25 Coldest Cities
MONEY Magazine: Best places to live 2006: Top 25 Coldest:
"1 Fargo, ND -2.3°F
2 St. Cloud, MN -1.2°F
3 Bismarck, ND -0.6°F
4 Duluth, MN 1.1°F
5 Blaine, MN 1.8°F"
Screening Tools Slow to Arrive in U.S. Airports - New York Times
Screening Tools Slow to Arrive in U.S. Airports - New York Times
EGG HARBOR, N.J. — Citing unexpected reliability problems, the Transportation Security Administration is suspending installation of the only airport checkpoint device that automatically screens passengers for hidden explosives.
The rollout of the devices, trace-detection portals, nicknamed puffers because they blow air while searching for residue from explosives, had already been far behind schedule. Now the transportation agency is assessing whether to modify the puffers, upgrade them or wait until better devices are available.
“We are seeing some issues that we did not anticipate,” Randy Null, the agency’s chief technology officer, said last week.
The portal problems are part of a pattern in which the federal government has been unable to move bomb-detection technologies from the laboratory to the airport successfully. While workers at the Homeland Security Department laboratory here busily build bombs to test the cutting-edge equipment, the agency still relies largely on decidedly low-tech measures to confront the threat posed by explosives at airports, particularly at checkpoints.
Members of Congress and former domestic security officials blame poor management for stumbles in research, turf fights, staff turnover and underfinancing. Some initiatives have also faced opposition from the airlines or been slowed by bureaucratic snarls. Among the troubled or delayed efforts are the following:
The agency conducted tests last year that members of Congress and a former Homeland Security Department official called “disastrous” and “stupid” because the agency had not tested the smaller, cheaper baggage-screening device in the way it was intended to be used.
After spending years assessing a document scanner that would look for traces of explosives on paper held by a passenger, the agency now realizes it may be preferable to check a passenger’s hands. But no plan is in place to do so.
The agency gave grant money to an equipment maker to find a way to speed up explosives-detection machines that screen baggage and to reduce the frequency of false positives. Though the work was completed successfully a year ago, the agency has not made the necessary software upgrades on the hundreds of machines already in the nation’s airports.
“Continuing to follow the slow, jumbled and disconnected path taken by T.S.A. and Homeland Security in the last five years is no longer acceptable,” said Representative John L. Mica, Republican of Florida and chairman of a House panel that oversees aviation security. “The whole program has been haphazard. And the result is that still today we have a series of outdated technology that does little but search for metal or guns.”
Though the transportation agency is credited with meeting a Congressional mandate to screen all checked baggage for explosives by December 2003, even security officials agree that the transportation research effort, which has cost $450 million in the last four years, must be fundamentally changed.
“This department can’t afford to not be at the cutting edge of innovative technology,” Michael P. Jackson, deputy secretary of homeland security, said in an interview. “The bad guys themselves are constantly assessing how good we are at preventing their efforts; we have to be one step ahead of them at all times.”
Conflict Between Agencies
Spread out on a table at the Transportation Security Laboratory outside Atlantic City last week, like a dim sum meal, was a collection of small dishes with samples of the explosives people here are working to defeat. They included Semtex, TNT, C4, British RDX and dynamite — several of which are popular among suicide bombers and have been used in successful airline plots — along with liquid explosives in bottles marked only “A,” “A1” and “B.”
Scientists and technicians carefully stuff these raw materials into computers, small electronic devices, shoes and cigar boxes, building every imaginable bomb and then testing them on detection equipment.
“We do our best to try to figure out all the options before someone else does,” said a laboratory technician who would identify himself only as Mr. T in accordance with a laboratory policy of not identifying staff members.
