Why don't babies laugh when they are born?

What would happen if I ate glass? Can you stop epileptic fits by removing a section of the brain? When we lose weight, where does the fat go? If we remove our thonsils, will this stop us snoring? Why don't babies come out the womb laughing, as opposed to crying? Plus, how a new drug that could cure obesity. Like this podcast? Please help us by supporting the Naked Scientists