They used a gene drive to create a genetic time bomb.

DARPA seeks to achieve high levels of brain-system communications without surgery, in its new program, Next-Generation Nonsurgical Neurotechnology (N3).
What trouble could a coin-sized black hole cause?
Two-thirds of all cancers are caused by DNA replication errors, according to Johns Hopkins researchers. But don’t light a celebratory cigarette just yet.
Angus, a 1,000lb robot, rolls about the indoor farm on omnidirectional wheels.
Its main job is to shuttle maturing produce to another, as-yet unnamed robot, which transfers plants from smaller growing pods to larger ones.
To do so, it uses a mechanical arm whose joints are lubricated with ‘food-safe’ grease.