Obstacle avoidance by echolocating bats: It might be simpler than it sounds

Echolocating bats can fly through complex environments in complete darkness. Swift and apparently effortless obstacle avoidance is the most fundamental function supported by biosonar. Despite the obvious importance of obstacle avoidance, it is unknown how bats perform this feat. New research published in PLOS Computational Biology suggests that bats compare the volume of an echo in both left and right ears, they then turn away from the side receiving the loudest echo, whereby avoiding the object