by Mariëtte Le Roux Agence France Presse PARIS, France (AFP) — Praying mantises sporting tiny 3-D glasses that were held in place with beeswax have revealed a new kind of “stereo” vision that may help improve robot sight, researchers said Thursday. With two teardrop-shaped, light-filtering lenses perched on their heads, the insects lashed out in lab experiments at images of tempting prey in a special 3-D film, a team of scientists said. Scientists then observed […]