In the quiet hum of a lab, scientists have found an unexpected ally in the fight to understand aging—a tiny, jewel-toned wasp. With its shimmering metallic body and short life, Nasonia vitripennis, ...

The jewel wasp is special because, unlike most invertebrates, it has a working DNA methylation system. That makes it a great model for studying the link between methylation and aging in a way that ...