columb columbia. all week we're bringing you top innovations from coast to coast featured in a fast company magazine article. join me, jeff chu and editor and writer at fast company. thanks for coming on the show again today. remind us if you can how you went about fining great innovations and how you went about whittling them down to one per state? >> we canvassed the country looking for great ideas of company, startup, not for profits that are working to do good things in their communities. we were really looking for ideas that helped cities become better place and just picked a good mix that represented a range of sectors from tech to the arts to environmental organizations and came up with a list that we think would be good for any city anywhere in america. >> we're taking our viewers through the list alphabetically. we ended on maine yesterday. let's move on to >> so, let's go to baltimore