As you know, when different species directly compete for the same finite resource, only the fitter will survive.  A new study in Proceedings of the National Academy of Sciences (PNAS) says they have demonstrated that in a laboratory environment, along with how, when given a variety of resources, the different species will evolve to become increasingly specialized, each filling different niches within their common ecosystem.

We're big fans of oxytocin understanding.  It generally makes people nicer and  and relationships are difficult.   When you introduce stressful issues into relationships, such as home finances, it can only get worse.    Oxytocin has been found to make relationships a little less difficult because it can take the "edge" off sensitive discussions.

The actual biology of human social relationships is just beginning to emerge as research on social cognition conducted in animals is now informing research in humans. 

According to a 19th century nursery rhyme, the biological distinctions between males and females are thus:

What are little boys made of?
What are little boys made of? 
Frogs and snails
And puppy-dogs' tails,
That's what little boys are made of.
What are little girls made of?
What are little girls made of? 
Sugar and spice
And all things nice,
That's what little girls are made of.

This was pre-Mendel but we bet he agreed.    Boys seem to really get cheated on cute rhymes about gender differences.   But what came first, the rhyme or the differences?   

LOS ANGELES, April 28 /PRNewswire/ --

Taking a cue from the number one women's wardrobe staple, the little black dress, Hurley and Bar Refaeli introduce the Little Black Bikini, a timeless essential for beaches everywhere.

The limited-edition Hurley Little Black Bikini by Bar Refaeli will retail for US$120, with a portion of proceeds donated to Boarding for Breast Cancer, a youth-focused non-profit that promotes early detection and an active lifestyle as the best prevention for breast cancer. It will debut on May 1, 2009 at select boutiques worldwide. As of June 2, it will also be available at select Victoria's Secret stores nationwide.

In ancient stories, and even some newer ones, the appearance of a comet or any heavenly object could symbolize a God's displeasure and even mean a sure failure in battle for one side.   Tel Aviv University researchers say comets could be even more relevant than mythology suggests; they might have actually provided the elements for the emergence of life on our planet.

Young children think about gender in the same way they think about species of animals. They believe, for example, that a boy's preference for football is innate, as is a girl's preference for dolls, just as cats' behavior is innately different from dogs'.

That's the finding of a new study from researchers at Pacific Lutheran University and the University of Michigan. The study appears in the March/April 2009 issue of the journal Child Development.