Attention Deficit/Hyperactivity Disorder (ADHD) is a complex condition considered by some to have both environmental and genetic causes. It is characterized by developmentally inappropriate levels of inattention, hyperactivity and impulsivity that has an onset in childhood. It has become one of the most commonly diagnosed psychiatric diseases, diagnosed in up to 8 percent of children worldwide.

Asteroids are hunks of rock that orbit in the outer reaches of space.  Scientists have generally assumed that their small size limited the types of rock that could form in their crusts but two newly discovered meteorites have changed that.  
 
The two meteorites were discovered during the Antarctic Search for Meteorites (ANSMET) 2006/2007 field season in a region of the Antarctic ice known as the Graves Nunatak icefield. The light-colored meteorites, designated GRA 06128 and GRA 06129, were immediately recognized as being different from previously known meteorites.

It seems obvious, right?   If you are around people who don't think much of you, over time you are more inclined to think less of yourself.  That's self esteem.

Looking at yourself in the mirror every morning, you never think to question whether the person you see is actually you but our interaction with others impacts that also, claims a PLoS ONE study by Dr Manos Tsakiris in Department of Psychology at Royal Holloway, University of London.   He challenges this common-sense notion about our own self image and  says that the image we hold of our own face can actually change through shared experiences with other people's faces. 

Herbicide use should increase crop yields, that's the whole point, and herbicides and pesticides do that, given the output in food production that has matched the population increases over the last two centuries.  But there may be a problem in how some herbicides impact reproduction and tests may not be accounting for that, says a study in the Journal of Environmental Quality.

Scientists can now call up stem cell troops to repair the body using new drug combinations.  They have basically 'tricked' bone marrow into releasing extra adult stem cells into the bloodstream, a technique that they hope could one day be used to repair heart damage or mend a broken bone, according to a new study published today in Cell Stem Cell. 

A study published in Cancer Prevention Research identifies components of black raspberries with chemopreventive potential.  Researchers at the Ohio State Comprehensive Cancer Center found that anthocyanins, a class of flavonoids in black raspberries, inhibited growth and stimulated apoptosis in the esophagus of rats treated with an esophageal carcinogen.