Is there a good excuse for laziness? Maybe, if you're in a colony of ants. When they set out to dig a tunnel, only a few of them actually work. The majority just get out of the way. It turns out that their laziness is a key strategy to getting work done efficiently and avoiding traffic jams, found Daniel Goldman of the School of Physics. Find the original Georgia Tech story on his research here and more coverage at Quartz and Popular Mechanics.