Barry Marshall won the 2005 Nobel Prize for Medicine, with Robin Warren, for discovering that stomach ulcers can be caused by bacteria and can be treated with antibiotics. He experimented on himself to prove their theory.Lorna Hendry is a writer, editor, graphic designer and teacher but, long before all of that, she studied science at university. She loves the challenge of making science fun and easy to understand. Lorna has written books on a range of topics, from endangered animals to genetics. She has never won a Nobel Prize.Bernard Caleo discovered the Tintin series of comic books at his local library when he was five, and this shaped his entire life. These days he draws pictures, writes words, and makes comic books.