This page discusses Linus Pauling, a notable twentieth-century scientist who won the Nobel Prize in Chemistry and Peace. Despite proposing an incorrect DNA model in the 1950s, he remained respected in...This page discusses Linus Pauling, a notable twentieth-century scientist who won the Nobel Prize in Chemistry and Peace. Despite proposing an incorrect DNA model in the 1950s, he remained respected in the scientific community. It explains the composition of DNA and RNA, noting their nucleotide differences, and highlights the correct double helix structure discovered by Watson and Crick in 1953.