GizMag

(Source: gizmag.com)   If you've ever watched a flying bird weaving its way through a forest, you may have wondered how it could do so without hitting its wings on the trees. Well, birds actually do hit trees with their wings. Unlike the rigid wings of an aircraft, however, birds' wings simply fold back under impact, then immediately fold open again to maintain flight. Now, … [Read more...] about Bird-Inspired Wings Could Help Drones Recover From Collisions