20150126_atc_on_the_ant_highway_theres_never_a_backup.mp3?orgId=1&topicId=1132&d=203&p=2&story=381647516&t=progseg&e=381646601&seg=17&ft=nprml&f=381647516
A team of Indian physicists has made a mathematical model that purports to explain why ants don't have traffic jams. NPR's Joe Palca explains as part of his series, Joe's Big Idea.
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