Children believe the world is far more segregated by gender than it actually is, according to a psychology paper which analyzed classroom friendships in five U.S. elementary schools.  

While the boys and girls had no problems being friends together, they had a perception that only boys played with boys and girls played with girls. The biological differences were a clear differentiating point. If so, does that mean the cause is evolutionary psychology, social psychology or sociology?

Jennifer Watling Neal and colleagues examined classroom friendships in five U.S. elementary schools. They found boys and girls had no problems being friends but had a perception that only boys played with boys and girls played with girls.

Today the Baryon Oscillation Spectroscopic Survey (BOSS) Collaboration announced that they have measured the scale of the universe to an accuracy of one percent.   

The clymene dolphin is a small and sleek marine mammal living in the Atlantic Ocean. A new study has found this dolphin is a rarity in mammals - a genetic hybrid that is closely related to spinner and striped dolphins.

The classification of the clymene dolphin has been a longstanding challenge to taxonomists, who initially considered it to be a subspecies of the spinner dolphin. Then in 1981, thorough morphological analyses established it as a recognized distinct species.

Hubble's Frontier Fields observing program is using the magnifying power of enormous galaxy clusters to peer deep into the distant Universe and Abell 2744, nicknamed Pandora's Cluster,  is  the first image.

Astronomers previously observed Abell 2744 with the NASA/ESA Hubble Space Telescope back in 2011 and determined it had a very violent history, having formed from a cosmic pile-up of multiple galaxy clusters. They found that at least four galaxy clusters had crashed into one another to form Abell 2744, causing some weird and wonderful effects. 

Fish that glow and various other creatures that are given that ability due to genetic modifications often make the news for shock value.  Huffington Post got an opportunity to 'shock' and 'amaze' its audience with a story about piglets that glow in the dark thanks to some jellyfish DNA. 

But it's rather common in nature, it turns out. A team of researchers has released the first report of widespread biofluorescence - a phenomenon by which organisms absorb light, transform it, and eject it as a different color - in the tree of life of fishes, identifying more than 180 species that glow in a wide range of colors and patterns.

In a future where the public will be paying for health care, the patience for preventable diseases, like those related to smoking and overeating, is dwindling.

But current weight loss messages and the stereotyping in the media -  that characterize overweight individuals as lazy, weak-willed, self-indulgent and contributing to rising health care costs — may be tipping the scales in the wrong direction. Designed to encourage weight loss, they may actually have the opposite effect, according to U.C. Santa Barbara psychology professor Brenda Major.