And then there were 20. The Bloomberg Mayor’s Challenge has narrowed its list of competing cities to 20 finalists! The competition—which encourages architects, city planners, and governments to come up with innovative solutions to improve city life—was originally announced in June by New York City Mayor Michael Bloomberg to assist in addressing urban challenges. Of the 305 cities that submitted proposals, 20 were chosen to continue to the next step: an Ideas Camp, where the final five will be selected and a total of $9 million will be awarded to implement their ideas.