Drs. John Sij, Cristine Morgan and Paul DeLaune have studied nitrate levels in irrigation water from the Seymour Aquifer for the past three years, and have found nitrates can be as high as 40 parts per million. Though unacceptable for drinking, the water would benefit agricultural producers who use it for irrigation. 

This high concentration of nitrates is a concern because it exceeds the federal safe drinking water standards as the aquifer is used as a municipal water source for the communities of Vernon, Burkburnett and Electra, as well as some rural families, Sij said. 

A reconstruction of an extreme warm period shows the sensitivity of the climate system to changes in carbon dioxide (CO₂) levels as well as the strong influence of ocean temperatures, heat transport from equatorial regions, and greenhouse gases on Earth's temperature.

The researchers say the new data allow for more accurate predictions of future climate and improved understanding of today's warming because past warm periods provide insight into climate change and are natural laboratories for understanding the global climate system.

Scientists from the Pliocene Research, Interpretation and Synoptic Mapping (PRISM) group, led by the U.S. Geological Survey, examined fossils from 3.3 to 3.0 million years ago, known as the mid-Pliocene warm period.

Showing loved ones that you're thinking of them is still the main focus at Christmas time but are traditional cards becoming outmoded by technology?   Results of a survey published today conducted by Christmas video messaging site Christmasee.com shows that whilst cards remain popular, nearly one in four (23 per cent) of those surveyed intend to send fewer cards or no cards at all this Christmas.

As daily use of the internet becomes more commonplace, almost a quarter (24 per cent) of under 45's quizzed view sending Christmas cards as old fashioned and believe that there are more effective ways to share greetings.

Half of those cutting back on the number of cards they'll send this year attribute their decision to the current economic climate.

A growth hormone that had shown some promise for treating people with amyotrophic lateral sclerosis (ALS) showed no benefit in a new study published in Neurology. 

Two previous, shorter studies using growth hormone insulin-like growth factor-1, or IGF-1, to treat ALS had conflicting results. A North American study found that the drug was beneficial, while a European study found no benefit. 

Don't give up the driving range just yet, but a group of physicists at the 61st Meeting of the American Physical Society's Division of Fluid Dynamics say they can optimize a golf ball with numerical simulations, leaving prototyping to verify manufacturing rather than as part of the design.

That means some day you could have a golf ball optimized for your swing.

Were you first in line to buy a new iPhone?   Or are you still using your handy Motorola StarTAC from 1998?    Do you like changing jobs now and again because you get bored?

These personality traits may be hard-wired in your brain, according to scientists at the University of Bonn.   They say the neural connection between the ventral striatum and the hippocampus is what makes the difference. Both of them are reward centers in the brain. The reward system which urges us to take action is located in the striatum, whereas the hippocampus is responsible for specific memory functions.