The machine let the E. coli multiply, mixed them with the DNA strands, and applied an electric shock to open up the bacterial cells and let the DNA get inside.

FORBES: Putting Evolution to Work

The team conducted a series of experiments in which known quantities of five such chemicals were mixed with water and passed through a dishwasher, a washing machine, a shower head inside a shower stall or a tap in a bath, all inside a specially designed chamber.

ECONOMIST: Indoor pollution