You need to identify the steps at which contamination can occur - those are the critical control points. You take steps to make sure that that doesn't happen. And you monitor and evaluate and test to make sure that your system is working properly. And if it's done diligently and done faithfully and monitored carefully, then they're producing safe food. And no astronaut of which I'm aware has ever gotten food poisoning in outer space.

It's a completely reasonable diet -- heavy on fruits and vegetables and fresh, seasonal foods. I'm totally for it. It's common sense in a nice package.

One can only be in awe of the creativity of chocolate marketers. My take is that if there is a health benefit, it is small.

The key dietary messages are stunningly simple: Eat less, move more, eat more fruits and vegetables, and don't eat too much junk food. It's no more complicated than that.

The chef has kids complaining to their parents the food they get in school is better than what they get at home. He's turned this group of kids into curious, adventurous eaters.

Consumers have to understand that the purpose of these claims is to get them to buy the product.

The problem with nutrient-by-nutrient nutrition science is that it takes the nutrient out the context of the food, the food out of the context of the diet, and the diet out of the context of the lifestyle.