This week we are talking about urban bees and how converting vacant lots into green spaces doesn't only benefit humans. With a few adjustments, green spaces can help support local bee populations. We're talking to Ohio State University reserachers about how to help urban bees thrive.Mary Gardiner is a professor of entomology at the Ohio State University. Katie Turo is a post doctoral fellow in the department of ecology, evolution and natural resources at Rutgers University. Their latest study was recently published in the journal Conservation Biology.