Mora Leeb was 9 months old when surgeons removed half her brain. Now 15, she plays soccer and tells jokes. Scientists say Mora is an extreme example of a process known as brain plasticity, which allows a brain to modify its connections to adapt to new circumstances.Read more of Jon's reporting.Science in your everyday got you puzzled? Overjoyed? We've love to hear it! Reach us by emailing [email protected].