Every two seconds, across the world, an area of forest the size of a football field is clear-cut by illegal loggers. In some countries, up to 90% of all the logging taking place is illegal. Estimates suggest that this criminal activity generates approximately US $10-15 bn annually worldwide—funds that are unregulated, untaxed, and often remain in the hands of organized criminal gangs. Thus far, domestic and international efforts to curb forest crimes have focused on preventative actions, but they have had little or no significant impact. While prevention is an essential part of enforcement efforts to tackle illegal logging, it has not halted the rapid disappearance of the world's old-growth trees. New ideas and strategies are needed to preserve what is left of forests.