· Technique renders pathogens benign· Crop and animal diseases could also be targeted Scientists have taken a big step towards a new generation of antibiotics by designing compounds that stop bacteria "talking to each other", thwarting their ability to spread infection. The revolutionary approach renders bacteria benign rather than killing them off, and comes as many antibiotics are losing their potency against pathogens which have developed drug resistance.Tests showed the compounds actively blocked the spread of Pseudomonas aeruginosa, a common bacterium which causes fatal lung infections in people with cystic fibrosis and leads to life-threatening blood infections in patients with...