The Greater Des Moines Leadership Institute is sponsoring a program on the Environmental Capital section of the Capital Crossroads plan on Tuesday. A panel will include Dennis Parker, director of the Polk County Conservation Board, Mark Ackelson, president emeritus of Iowa Natural Heritage Foundation, Pat Boddy, stewardship director at RDG Planning & Design, and moderator Hannah Inman, director of communications for the Iowa Natural Heritage Foundation. The event will take place from 7:30 to 9 a.m. at the Windsor Heights Community and Events Center, 6900 School St. Registration costs $15 and can be done at www.gdmli.com.