By John Bohannon, ScienceNOW

Here’s what we know about the evolution of flight: By about 150 million years ago, the forests were filled with flying — or perhaps just gliding — dinosaurs like Archaeopteryx, possibly similar to the ancestor of modern birds. What we don’t know is what primitive wings were used for before bird ancestors could fly. A study published today in the journal Bioinspiration & Biomimetics provides some fresh data for this debate, not from fossils but a winged robot.

There are two main theories for how avian flight evolved. According to the “trees-down” theory, pri...

Remember that scene in the movie Predator, when Jesse Ventura is unleashing his M-134 mini-gun into the forest? It was being fed by an ammo box strapped to his back. Turns out, that wasn’t an actual piece of Army kit, at least until members of the Iowa National Guard created it themselves.

The National Guard division had been recently deployed to a forward operating base in Afghanistan and were issued Mk 48 machine guns when they arrived. The problem was, the belts of ammunition were extremely cumbersome and difficult for the gun’s operator to carry while on foot-patrol. The initial s...