Tampabay.comEven as medical marijuana becomes more widespread, there's little science to show it worksTampabay.comGroups ranging from the American Medical Association to the Brookings Institution have pushed to make research easier. It wasn't always this way. The cannabis plant was used as medicine in the United States for nearly a century. In the 1930s, tabloids ...DEA should 'do no harm' on medical marijuanaDaily Pressall 42 news articles »