Dogs successfully migrated to the Americas about 10,000 years ago, according to a new study. That's a long time ago but still thousands of years after the first human migrants crossed the land bridge from Siberia to North America. Dogs have been associated with humans in findings from 11,000 to 16,000 years ago. 

Whether you are a a hipster in Montreal or a Pygmy in the Congolese rainforest, certain aspects of music will touch you the same way.

That applies to scores we associates with very different films, and therefore tones, like Psycho, Star Wars, and Schindler's List, according to a team of scholars who arrived at this conclusion after traveling deep into the rainforest to play music to a very isolated group of people, the Mbenzélé Pygmies, who live without access to radio, television or electricity.

A study of circadian rhythms in skin stem cells finds that this biological clock plays a key role in coordinating daily metabolic cycles and cell division. The paper shows how the body's intrinsic day-night cycles protect and nurture stem cell differentiation and provides insights into a mechanism whereby an out-of-synch circadian clock can contribute to accelerated skin aging and cancers.

Bogi Andersen, professor of biological chemistry and medicine at University of California - Irvine, and Enrico Gratton, professor of biomedical engineering, focused their efforts on the epidermis, the outermost protective layer of the skin that is maintained and healed by long-lived stem cells.

Rock soil droplets formed by heating are part of the evidence used to content that a disastrous cosmic impact 12,900 years ago triggered the Younger Dryas cold period but they most likely instead came from Stone Age house fires, according to new research of soil from Syria.

The Younger Dryas lasted a thousand years and coincided with the extinction of mammoths and other great beasts and the disappearance of the Paleo-Indian Clovis people.

In the 1980s, some researchers put forward the idea that the cool period, which fell between two major glaciations, began when a comet or meteorite struck North America.

Noninvasive brain scans, such as functional magnetic resonance imaging, have led to basic science discoveries about the human brain and have also been wildly misused, claiming to correlate everything from the biology of voting to ideas like that people with messy offices are racist.

Though fMRI-based claims get lots of mainstream media attention, along with most weak observational studies, the actual value for society hasn't been there.

But it could be, according to a review of other studies in Neuron. They even believe brain imaging can help predict an individual's future learning, criminality, health-related behaviors, and response to drug or behavioral treatments.

The mythology among the people who really care about what is happening on the left or the right is that the people opposite them are uneducated and being exploited by elites.

The opposite is true: Polarized people tend to be highly educated. Sorry, Republicans, those Democrats did not register for the wrong party because they are dumb. and sorry, MSNBC viewers, Rush Limbaugh is one of the smartest people in America, whether you like his show or not. 

But that means some polarization is good. An educated public is a crucial element to a democratic society and educated people will have stronger opinions than those who always waffle and take the middle ground and say it depends on what the definition of something is.