On May 1, the London-based research firm EIRIS released On Track for Rio+20: How are Global Companies Responding to Sustainability?, which found that U.S. and Asian companies rank worse than their European counterparts in key sustainability indicators. In fact, not a single U.S. company rated in the top 10 in sustainability, a list that included Puma, GlaxoSmithKline, and Philips Electronics.