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.
On November 4, voters in five Michigan cities voted to decriminalize marijuana possession. These are the most recent cities to do so. But decriminalizing a federally illegal substance is complex. These laws leave a lot up to the interpretation of local law enforcement officials. Decriminalizing marijuana began back in 1972 in Ann Arbor, and has really picked up steam over the last few years.