Like this one. but there were also abuses. >> the us military and cia experimented with lsd sometimes without patient's knowledge fear over rampant drug use and the spread of the counterculture movement, not to mention harvard professor timothy leary jury urging people to turn on tune in and drop out lead to a clamp down. this nation faces a major crisis in terms of the increasing use of drugs, particularly among our young people in 1970, president richard nixon signed the controlled substances act and nearly all scientific research in the the us into the facts psychedelics on people stopped it wasn't until 2000. >> scientists roland griffiths, one fda approval to study psilocybin. >> this whole area of research has been in the deep freeze for 25 or 30 years. and so as a scientist, sometimes i feel like rip van winkle and once you saw results, yeah, that red lights start flashing. this is