Though New Orleans residents were told to evacuate days before the arrival of Hurricane Katrina, no one could have predicted the real extent of the devastation that would follow. 

Researchers from Tel Aviv University say they may be ableto make just such a prediction in the future.   They say a reliable way to help predict the intensity of the next big flood can use common cell phone towers across the United States. Their model, which analyzes cell phone signals, adds a critical component to weather forecasting never before available. 

Scientists at Burnham Institute for Medical Research (Burnham) say they have discovered that specialized complex sugar molecules (glycans) that anchor cells into place act as tumor suppressors in breast and prostate cancers.

Glycans play a critical role in cell adhesion in normal cells and their decrease or loss leads to increased cell migration by invasive cancer cells and metastasis but an increase in expression of the enzyme that produces these glycans, β3GnT1, resulted in a significant reduction in tumor activity.

If you were born at a time when social security numbers were not required, you can probably recognize other people from your home state if you see or hear their numbers.    You may have thought there was a smarter system in place by now.

Not so, and it's actually easy to glean a social security number,  say project lead Alessandro Acquisti, associate professor of information technology and public policy at Carnegie Mellon's H. John Heinz III College, and Ralph Gross, a post-doctoral researcher, who have shown that public information readily gleaned from governmental sources, commercial data bases, or online social networks can be used to routinely predict most — and sometimes all — of an individual's nine-digit Social Security number.

Parasites don't get a lot of respect these days but we may have to reconsider that.  In spite of their nasty reputation, they may have given us the joy of sex.

What's so great about sex?

If you don't know, this article cannot help and even from an evolutionary perspective the answer is not as obvious as one might think.

Two studies published in Science Express show the analysis of gamma-rays from two dozen pulsars, including 16 discovered by  NASA's Fermi Gamma-ray Space Telescope. Fermi is the first spacecraft able to identify pulsars by their gamma-ray emissions alone.

A pulsar is the rapidly spinning and highly magnetized core left behind when a massive star explodes. Most of the currently cataloged pulsars, some 1800 of them, were found through their periodic radio emissions; pulses caused by narrow, lighthouse-like radio beams emanating from the pulsar's magnetic poles, according to current theory.

Why do some species  have parents working together to raise young?  In humans, it is the norm but in nature it is rare.

Birds, like humans, have offspring raised by two parents and bird biologists at the University of Bath want to know more about why.  The study, published in the Journal of Evolutionary Biology, analyzed more than 50 previous studies of birds to understand why and how they share their parental duties.  

Even among giants Messier 87, with two to three billion times the mass of our sun, stands out, completely dominating the Virgo cluster.

A supermassive black hole exists in the center of Messier 87 and gigantic plasma flows shoot out from the vicinity of the black hole at close to light speed. Scientists have now observed, simultaneously in gamma and radio frequencies, this active galactic core region and in doing so discovered that the elementary particles are accelerated to extremely high energy levels in closest proximity to the black hole.

The 2009 World Conference on Science Journalism took place last week in heat-wave-struck London, at the convenient location of Westminster Central Hall (see below). More than 900 delegates got together from 90 countries to discuss the future of science journalism, understand the challenges the field is facing, and finding strategies to face them. An impressive event, excellently organized.

Mars, Incorporated, the global brand dealing primarily with chocolate, other candy and pet food (1), wants to discuss its cocoa sustainability program as part of a summer-long sustainability exhibition on Mainau Island - a botanical island famed locally for its flora and fauna and located in the middle of Lake Constance, Germany, one of Germany's most popular tourist destinations.

The exhibition, which opens today, follows on from the annual Lindau Nobel Laureate Meeting in Germany last week, in which Mars was a sponsor.

Robots, lacking families and pensions, will rush into scenarios where humans fear to tread, like rescue missions following natural disasters.   So they need our support.  

RoboCup Rescue is a new effort to promote research and development in the field of rescue robotics. Robots for search and rescue missions, the efficient co-ordination of rescue services or decision-support systems are all the practical result of rescue robotics research. Two RoboCup leagues give an insight into digitally supported rescue possibilities: Rescue Simulation and Real Rescue.


Rescue Robot at RoboCup 2009.  Photo: TU Graz