The evidence for keeping weed illegal keeps mounting — even as the laws get looser. A new, peer-reviewed study (on a significant data set of nearly 60,000 Canadians) has shown that adults who misuse pot have a 60% higher risk of experiencing their first heart attack, stroke, or other major cardiovascular event. In other words: Weed’s not a harmless vice. It’s a killer, like cigarettes. And unlike cigarettes, it literally drives people insane. A massive Danish study based on nearly 7 million health records drew a strong correlation between heavy cannabis use and increased risk of schizophrenia in young men....