Samuel Gray is very brave about his daily injections. At six-and-a-half, confident and happy, he was a boy who knew his own mind and made a big decision about his future. His parents had asked him if he wanted to take part in a clinical trial for a drug that could improve some of the conditions associated with achondroplasia, the most common form of dwarfism, with which Samuel was born. It would also, the researchers believed, increase his height. “Maybe children don’t know the bigger picture, but they know deep within themselves whether they want to do something or not,” says his mother, Kristina Gray, “and we would never force Samuel to do anything that he didn’t want to do.” She says she is proud of him for taking part, and that for their family it has always been about “the bigger picture, because we never knew if Samuel would