Oscar Pistorius did himself more harm than good when he took the witness stand, say South African lawyers. Throughout five gruelling days on the witness stand, the Paralympic gold medallist contradicted himself, a nail in the coffin for his defence, said lawyers watching the case. Initially, Pistorius had said he believed he was under attack by an intruder when he fired four shots at the toilet door. Pistorius has also suggested he was not thinking rationally when he fired his 9mm pistol at a toilet door begind which was his girlfriend, 29-year-old model and law graduate Reeva Steenkamp.
Young, casual marijuana smokers experience potentially harmful changes to their brains, with the drug altering regions of the mind related to motivation and emotion, researchers found. The study to be published on Wednesday in the Journal of Neuroscience differs from many other pot-related research projects that are focused on chronic, heavy users of cannabis. The collaborative effort between Northwestern University's medical school, Massachusetts General Hospital and Harvard Medical School showed a direct correlation between the number of times users smoked and abnormalities in the brain. "What we're seeing is changes in people who are 18 to 25 in core brain regions that you never, ever want to fool around with," said co-senior study author Dr. Hans Beiter, professor of psychiatry and behavioral sciences at Northwestern University.