NODE SMITH, ND Legend has it that Marie Antoinette's hair turned gray overnight just before her beheading in 1791. Though the legend is inaccurate -- hair that has already grown out of the follicle does not change color -- a new study from researchers at Columbia...

NODE SMITH, ND Scientists explored a technique called 'neurofeedback,' which enables ADHD patients to train their attention, based on instant feedback from the level of their brain activity. The team of neuroscientists found that not only did the training have a...