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.

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.