Ebook: TIME, the science of siblings

Almost no relationship will influence you as much as those you share with your siblings. They are the people who were by your side in the nursery and will stay with you for the entire ride. Scientists are only now discovering the power of the sibling bond, and TIME's special edition tells you what they're learning, including: The truth about the influence of birth orderWhy it's actually a good thing that kids fight so much The ways sisters and brothers teach each other about the opposite sex. How you can heal broken relationships.