The caffeine in a cup of coffee might help your small blood vessels work better, according to a paper presented at the American Heart Association's Scientific Sessions 2013, which followed 27 healthy adults and showed that drinking a cup of caffeinated coffee significantly improved blood flow in a finger, which is a measure of how well the inner lining of the body's smaller blood vessels work.

Specifically, participants who drank a cup of caffeinated coffee had a 30 percent increase in blood flow over a 75-minute period compared to those who drank decaffeinated coffee.  

The genome sequence of a 24,000-year-old Siberian individual demonstrates genomic signatures that are basal to present-day western Eurasians and close to modern Native Americans and provides a key piece of the puzzle in the quest for Native American origins and also sheds light on the genetic landscape of Eurasia 24,000 years ago. 

As portable electronic devices such as laptops and smartphones get more robust, consumers would like for batteries to keep pace. But rechargeable batteries -- Lithium-ion (Li-ion) being among the most popular - haven't done that. They are 25 year old technology powering things produced this year.

Japanese researchers from a prive sector-government team report an advance in Li-ion battery technology that they describe as a major breakthrough. They fabricated a cathode (positive electrode) of lithium cobalt oxide (LiCoO₂) in which the compound's individual grains are aligned in a specific orientation. The researchers claim that this yields a significantly higher-performing battery than one with a randomly-oriented LiCoO₂ cathode.

Do we process language we hear without regard to anything about the speaker?

Perhaps or perhaps not. A small psychological experiment using University of Kansas undergraduates who were paid to participate and spoke Spanish found that the sex of a speaker affected how quickly listeners identified words grammatically - evidence that even higher-level processes are affected by the speaker. 14 of the participants were female and 6 were male.