Geologists have analyzed 40 meteorites that fell to Earth from Mars those chemical signatures have revealed some secrets of the early Martian atmosphere.

The atmospheres of Mars and Earth diverged in important ways very early in the 4.6 billion year history of our solar system.

Of course, what everyone wants to know is if life ever existed there and how water flowed in the past. Those answers are still waiting to be found but researchers are learning where to look.

On the scale of earth-friendly materials, most people don't think of polyester but scientists are figuring out how to extract a natural, waterproof, antibacterial version of it from...cork.
Writing in Biomacromolecules, Cristina Silva Pereira and colleagues explain that polyesters are ubiquitous in modern life, and for good reason. Their durability and other traits make them ideal for use in cushioning and insulating materials, in liquid crystal displays, holograms, filters, and as a high-gloss finish on guitars and pianos.

If you were a blonde girl or boy captured in a raid a few hundred years ago, you were an exotic luxury item so valuable it was worthwhile to transport you to far-away markets in Asia.

Slave-trading was so common the routes stretched from Finland, the Russian Karelia and the Baltic Countries all the way to the Caspian Sea and central Asia.

Finland to Asia? Rarely, of course. Only the largest merchants, with a buyer already in place, would hire gangs from the Volga to capture people and then hazard that journey. Writing
in Russian History, University of Eastern Finland
Professor Jukka Korpela

There's a disturbing, though funny to outsiders, trend sweeping green conscious corporations on the coasts of the United States - flurries of emails between indignant employees talking about how long their cars have been plugged in.

Though subsidies and public relations campaigns for electric cars are everywhere to be found, improvements in batteries have been absent for decades. Unless we want acid rain to come roaring back, there needs to be an improvement. Electric car companies are not going to spearhead the research, they are enjoying their 1950s-style "planned obsolescence" and have no reason to cause people to buy cars less often.

A larger waist circumference is associated with higher risk of postmenopausal breast cancer, according to a paper by American Cancer Society researchers in Cancer Causes, and Control which disputes previous findings that body shape itself is an independent risk factor for breast cancer. 

A significant body of research has linked abdominal obesity to a number of conditions, including heart disease, type II diabetes, and breast and other cancers. Those studies have led to the belief that having an "apple shaped" body, with weight concentrated in the chest and torso, is riskier than having a "pear-shaped" body, with fat concentrated in the hips, thighs and buttocks. 

A quasiparticle called the exciton is responsible for the transfer of energy within devices, such as solar cells, LEDs, and semiconductor circuits, and has been understood for decades, but exciton movement within materials has never been directly observed.