Paving the Road to Hell

Find the common thread and win a free Prozac prescription: Treating cattle for lameness and fever drives vultures to the brink of extinction; planting biofuel crops fuels forced labor and sickness; drilling wells for the poor poisons a country. Not so long ago, millions of vultures swirled in dark, majestic clouds above the Asian subcontinent and performed a vital role: By eating carrion and waste--everything from ritually laid out human corpses to dead livestock--the scavengers cleansed the env