Researchers have completed the largest ever survey for very distant clusters of galaxies. 

Named the Spitzer Adaptation of the Red-sequence Cluster Survey, "SpARCS" detects galaxy clusters using deep ground-based optical observations from the CTIO 4m and CFHT 3.6m telescopes, combined with Spitzer Space Telescope infrared observations. 

SpARCS is designed to find clusters as they appeared lwhen the universe was 6 billion years old or younger.  Astronomers believe the universe was formed 13.7 billion years ago.

Are individuals, families and employers getting their money's worth from US healthcare?

You'd think not, given the media full court press by the Obama administration for a federal health care plan at a cost of trillions that will allegedly be paid for by 'savings' in current health care.    Like 'jobs saved', it isn't a number anyone can really track so it's up to individual belief - and likely political party registration.    The federal government wants to provide more services to more people.   And that may not be good health policy.

Why did our Milky Way galaxy survive while others failed?    Ill-defined, convenient catch-all dark matter gets the credit, according to a new paper.   Dark matter is thought to make up 85 per cent of the Universe’s mass and it may also be one of the building blocks of galaxy formation.

The researchers say that the early Milky Way, which had begun forming stars, held on to the raw gaseous material from which further stars would be made. This material would otherwise have been evaporated by the high temperatures generated by the “ignition” of the Universe about half-a-billion years after the Big Bang.

Welcome back, Moa.   Scientists say they have performed the first DNA-based reconstruction of the giant extinct moa bird using prehistoric feathers recovered from caves and rock shelters in New Zealand.

The researchers from the University of Adelaide and Landcare Research in New Zealand have identified four different moa species after retrieving ancient DNA from moa feathers believed to be at least 2500 years old.

The giant birds, measuring up to 2.5 meters and weighing 250 kilograms, were the dominant animals in New Zealand’s pre-human environment but were quickly exterminated after the arrival of the Maori around 1280 AD.


Moa bird

Interested in Michael Jackson now that he is dead?   So are cyber criminals who are exploiting public interest in his death with spam messages that infect computers with a virus able to steal bank account numbers and passwords, according to Gary Warner, University of Alabama at Birmingham (UAB) director of research in computer forensics. Warner and the other researchers at the UAB Spam Data Mine began tracking the celebrity-focused spam early on Tuesday, June 30.

“We’ve been tracking the cyber criminals behind this spam and the associated virus for many weeks, but it is just today that they have shifted their strategy by embedding their virus into an e-mail that claims to link you to a Web site that will reveal Michael Jackson’s killer,” Warner said. 

With the increasing popularity of whitening teeth, and some studies showing negative effects of teeth whitening, researchers at the Eastman Institute for Oral Health at the University of Rochester Medical Center set out to learn if there are negative effects on the tooth from using whitening products.

Eastman Institute's YanFang Ren, DDS, PhD, and his team determined that the effects of 6 percent hydrogen peroxide, the common ingredient in professional and over-the-counter whitening products, are insignificant compared to acidic fruit juices. Orange juice markedly decreased hardness and increased roughness of tooth enamel.