The study, co-authored by Professor David Nutt, ranks 20 drugs on 16 measures of harm to users and to wider society. Tobacco and cocaine are judged to be equally harmful, while ecstasy and LSD are among the least damaging.
Police arrested rapper T.I. and his wife in California after they were allegedly found in possession of a controlled substance.
Under the old law, someone convicted of possessing five grams of crack cocaine received a mandatory five years in prison. Those convicted of possessing powder cocaine had to be holding 100 times that amount to get the same mandatory sentence.
On Monday, residents of Kingston, Jamaica said that government helicopters dropped explosives into the area near wanted drug kingpin Christopher “Dudus” Coke’s stronghold, though it was not clear if he was there.