Karen Landman, Health and Science Reporter at Vox. She started investigating the effects of weed on pregnancy when a friend asked her to look into it. And then you found that even though we don't know a ton about how weed could impact a pregnancy or a child, there are actually a lot of potential legal consequences for parents to navigate. We start tonight with an investigation into mothers facing jail time for using prescribed medical marijuana. Some of these women are facing life in prison.