Last month, I met an obstetrician in India and in the course of conversation, asked her how many babies she had delivered.   “After ten thousand babies, I stopped counting, ” she said.   Naturally…

Amit Jain |

Conflict Diamonds A National Geographic Special on conflict diamonds. I am a mining specialist, not a conflict specialist. But on my recent trip to Sierra Leone, I was struck by the ever-present…

Christopher Sheldon |