China on Wednesday introduced standards for levels of the industrial chemical melamine permitted in milk and food products as it seeks to rein in a festering safety scare.

Craving a burrito with sour cream and guacamole? What if you knew it had more than half the calories you should eat in a day?

A German farmer who received the world's first complete double arm transplant said Wednesday that incredulity gave way to joy when he woke from surgery to discover he had arms again.

A German farmer who received the world's first complete double arm transplant is recovering well and able to perform some basic tasks, though doctors said Wednesday it still could take up to two years before he relearns how to use his hands.