From generation to generation, languages evolve. In the 21st century, over 7000 languages are spoken worldwide. The world's oldest known written language is Sumerian cuneiform, dating back to 3200 BC. With each new generation, technology advances rapidly - the first email was sent in 1971, now over 300 billion emails are sent daily. Cuisine also transforms - sushi originated as a way to preserve fish. Today, it's a worldwide delicacy. Times change, but the world keeps spinning, ever-changing and full of surprises.