YouTube star Simone Giertz is back in her workshop after having surgery to remove a brain tumor. Simone is known for creating crazy machines that don't always work the way they're supposed to. She hasn't posted a video on her page, which has more than a million subscribers, since last month, before she went under the knife. She says she's been concentrating on her recovery, which hasn't always been pretty. InsideEdition.com's Mara Montalbano (https://twitter.com/MaraMontalbano) has more.