For a moment, the most important news in the entire world flashed across the media like a shooting star in the night sky. Then it was gone. Last month, more than 15,000 scientists from 184 countries issued a dire warning to humanity. Because of our overconsumption of the world's resources, they declared, we are facing "widespread misery and catastrophic biodiversity loss." They warned that time is running out: "Soon it will be too late to shift course away from our failing trajectory."