Every human is unique, from our thoughts and actions to our DNA. Scientists spent billions of dollars and over a decade to map the human genome, the sequence of DNA within one human being. Since the project was completed ten years ago, scientists have discovered how to make gene sequencing much more cost- and time-efficient, but they are still working on understanding the genome as it relates to traits and health. Learn about what it really means to sequence a genome with an easy-to-follow video and quiz.