On the back side of most gadgets, there's a string of hieroglyphs that look like the bottom line on the eye chart from hell. But this mishmash of symbols and letters is actually essential to international trade. Here's what each one means and why it's on there.
In 1996, Dolly the sheep made headlines for being the first mammal cloned from an adult cell. She was put down in 2002. But as it turns out, Dolly's still alive today. A scientist secretly made four copies years ago.