Certain varieties of common fescue lawn grass come equipped with their own natural broad-spectrum herbicide that inhibits the growth of weeds and other plants around them.

Cornell researchers have identified the herbicide as an amino acid called meta-tyrosine, or m-tyrosine, that these lawn grasses exude from their roots in large amounts. This amino acid is a close relative of para-tyrosine (p-tyrosine), one of the 20 common amino acids that form proteins.

Atmospheric scientists are just about the only group that doesn't have a crime drama on television but that may change. In every crime drama there needs to be a victim, in this case the atmosphere, and we might have a part-time criminal in ozone. There's even a pretty good name for the show - 'Windprofilers.'

Ozone is a colorless, toxic gas named for the Greek word for smell because of its pungent odor.

A new study led by researchers at The Miriam Hospital’s Weight Control & Diabetes Research Center finds that dieters who have the tendency to eat in response to external factors, such as at festive celebrations, have fewer problems with their weight loss than those who eat in response to internal factors such as emotions. The study also found that emotional eating was associated with weight regain in successful losers.

The study is published in the October 2007 issue of Obesity.

“We found that the more people report eating in response to thoughts and feelings, such as, ‘when I feel lonely, I console myself by eating,’ the less weight they lost in a behavioral weight loss program.

Statement of Anthony S. Fauci, M.D., director, National Institute of Allergy and Infectious Diseases:

The new analyses revealed today from the STEP HIV vaccine clinical trial are both disappointing and puzzling. At this time, the data offer no clear explanations as to why the vaccine showed no measurable efficacy or why among individuals with background immunity to the adenovirus vector, there were more HIV infections in the vaccinees as compared to those in the placebo group.

The English Reformation spurred a fundamentalist approach to Bible reading, according to new research by a Harvard professor.

“Evangelical reading habits after 1525 were disciplinary, punishing and even demeaning,” says James Simpson, Donald P. and Katherine B. Loker Professor of English in Harvard University's Faculty of Arts and Sciences.

In 1525, Protestant reformer William Tyndale translated the Bible into early modern English. Scholars have widely hailed that moment as a liberating step for the literate public, who could suddenly read the Bible on their own terms, without the constraints of priestly interpretation.

Is sexual orientation something people are born with - like the color of their skin and eyes - or a matter of choice?

Canadian scientists say they have uncovered new evidence which shows genetics has a role to play in determining whether an individual is homosexual or heterosexual.

The research was conducted by Dr. Sandra Witelson, a neuroscientist in the Michael G. DeGroote School of Medicine at McMaster University, and colleagues at Sunnybrook Health Sciences Centre in Toronto who studied the brains of healthy, right-handed, 18- to 35-year-old homosexual and heterosexual men using structural Magnetic Resonance Imaging (MRI).