Nanoparticles and human cells Scientists at Brookhaven National Laboratory in New York have developed a screening method to examine how newly made nanoparticles interact with human cells following exposure for various times and doses. This study throws light on how human cells interact with carbon nanoparticles. These experiments will give insight into the design of nanoparticles keeping in mind safety concerns and optimizing their use in health related applications. It may also le...

Why smoking is an addiction? New imaging studies of the smokers show that nicotine causes the addiction. A few puffs of cigarette can exert a force powerful enough for the individual to continue smoking. For this reason we see people become chain smokers. According to Archives of General Psychiatry, the drug therapies of smoking cessation need to be extremely potent to compete with nicotine. Only one puff of cigarette can occupy 30% of brains common type of nicotine receptors. Stu...

New Hopes in Stem Cells Human embryonic cells remain a research tool to study the mechanisms of disease. There will be many therapeutic benefits. We will be able to produce new drugs. Thomas M. Messell, a neurobiologist at Columbia University Medical Center in New York, stated he hoped to see the research generate new drugs for neurodegenerative disease. He expects a revolution within the next 5 years. Scientists have spent the last 5 years in how to grow the cells in the lab an...

Cows communicate in regional accent! The farmers of London found that the cows communicate in their regional accent. The cows have a single syllable to communicate but they do it in using a regional accent as the study tells us. The cows have limited conversational skills. The herds in the West Country are mooing in their distinct Somerset twang. Some listeners describe this sound as “moo-arr” rather than moo. John Wells, professor of phonetics at the University of London thinks ...