It represents the time from the end of ventricular depolarization to the start of ventricular repolarization. ST elevation may indicate myocardial infarction or pericarditis. ST depression may indicate ischaemia.
Marijuana has been illegal for less than 1% of the time that itâs been in use. Its known uses go back further than 7,000 B.C. and it was legal as recently as when Ronald Reagan was a boy.The marijuana (hemp) plant, of course, has an incredible number of uses.arijuana has been illegal for less than 1% of the time that itâs been in use. Its known uses go back further than 7,000 B.C. and it was legal as recently as when Ronald Reagan was a boy.
It has only been the last 95 years or so that it plummeted from grace. Marijuana was legal to possess and use for medical reasons in every state of the Union until the federal government de facto banned its use and possession in 1937 (two years prior to World War II).ike the Harrison Act passed twenty-three years earlier, the 1937 Marijuana Act did not make possession or use of marihuana illegal, as this would violate the Tenth Amendment's limitation on federal power.