This Week in Science

In Science this week, researchers at the New York University School of Medicine and their colleagues compare the genome sequences of the ants Camponotus floridanus and Harpegnathos saltator. Both species' genomes, the authors write, "contained high amounts of CpG, despite the presence of DNA methylation." In their gene expression comparisons, Roberto Bonasio et al. found an "up-regulation of telomerase and sirtuin deacetylases in longer-lived H.

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23andMe's Anne Wojcicki ponders DNA and what it means to be human in a New York Times essay.

A new estimate places the last universal common ancestor to life on Earth as living 3.9 billion years ago, Inverse reports.

In PNAS this week: retinitis pigmentosa gene therapy, role of microbiome in growth stunting, and more.

Bloomberg reports that researchers and drug companies are modeling anti-obesity treatments after the rare genetic condition essential fructosuria.