Life With My Son

In case you wondered whether my kid has an engineer's sensibility (and if you've read my blog for more than a few weeks, you already know I have a 8-year-old mechanical whiz), here's what he asked me at breakfast over pancakes the other morning. This was a school morning. He wants me to give him a detailed answer before the school bus:

"How does a nuclear reactor work? Why do they need to cool down the water inside of it?"