It's a big question—how does the human body work? One of biology's greatest wonders, it's incredibly complex yet perfectly built to keep us alive. Scientists have figured out how it works, and it's more thrilling than science fiction.

From the DNA that makes us who we are to tiny proteins fighting off invading viruses and mighty organs holding us all together, biology helps us understand ourselves! Discover the experts uncovering the body's secrets, their groundbreaking research, and incredible breakthroughs, including…

• How fast the brain sends signals to other parts of the body
• The way the body regenerates itself to heal cuts and scrapes
• The biggest organ in the body (this one will really surprise you!)

Cool, graphic-style illustrations intermix with jaw-dropping facts in Tomorrow's World, showcasing science like never before—as something that can change the world!