This Week in Science

Science this week presents a special issue to mark the 40th anniversary of the signing of the US National Cancer Act in 1971 by then-President Richard Nixon. In their introduction to the special issue, Paula Kibertsis and Eliot Marshall note that papers published in Science at the time were asking questions like, "How do abnormalities in chromosome number arise in tumor cells? Can tissue-specific markers be used to determine the epithelial versus mesenchymal origin of a solid tumor?

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A new study in JAMA finds that genetic tests might not be able to determine what diet is right for someone seeking to lose weight.

A genome-wide association study that linked common genetic variants to salivary gland carcinoma risk has been retracted, according to Retraction Watch.

Vampire bats' ability to live off blood is etched in their genomes and gut microbiomes, the Scientist reports.

In Genome Biology this week: peopling of the Sahara, epigenetic reprogramming analysis of liverwort, and more.