Save this picture!Written by David BasultoPublished on December 02, 2011 Share ShareFacebookTwitterMailPinterestWhatsappOrhttps://www.archdaily.com/189052/ashoka-20-challenges-for-20-entrepreneurs Clipboard "COPY" CopyAshoka is the world’s largest community of social entrepreneurs, and has supported thousands of groundbreaking social innovators over the last 30 years (read more at McKinsey).