After more than 30 years in which psychedelics were considered dangerous remnants of the 1960s, the drugs have begun to make a comeback, this time as potential remedies for a host of tough-to-treat maladies. Pilot studies and clinical trials...

Heaven, or the afterlife, or Nirvana, or whatever you want to call it. Do we have a soul? Do we live on after death? Some think so, others consider it far-fetched. But Harvard trained neurosurgeon Dr. Eben Alexander spent...