Deep in the basement archives of London’s Great Ormond Street Hospital for Children, reside the patient records that cancer researcher Sam Behjati hopes will put the hospital’s past to work for the future. On May 2, he and his colleagues published the result: DNA sequences from the genomes of three childhood tumor samples collected at the facility almost a century ago. Those historic cells help to address a modern problem: the small number of tumor samples from rare cancers that are available for researchers to sequence. Behjati knows this problem well. At the Wellcome Trust Sanger Institute in Hinxton, UK, he tracks the genomic mis-wiring that can lead to rare childhood cancers. As someone who also treats patients, the lack evidence backing up much of his practice has frustrated him.Check out the article.