If a piece of toast fell on the floor, would you pick it up and eat it? You probably would if you believe in the 5-second rule, which suggests that your spilled breakfast stays germ-free as long as you snatch it up in five seconds.
But while the 5-second rule remains a popular rule of thumb, [...]

Amid a flood of contaminated Chinese imports, we ask: what is going on? How dangerous are these foods and medicines? Is this normal, expected? Or should we be doing something more to improve safety?