In the latest issue of Nature Reviews Neuroscience, leading scientists argue that the UN conventions on drugs in the 1960s and 1970s, which outlawed drugs with psychoactive substances such as marijuana, is hindering research into potentially significant medicinal uses, estimating that research in key areas such as consciousness has been set back by decades. Report authors Professor David Nutt and Professor David Nichols contend that the illegal status of psychoactive drugs makes it almost impossible…