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A fear of insects is not unusual, but the prospect of giant insects on Earth and the possibility of encountering an earwig that rivals your own stature is enough to give even the most macho man the creeps.

Scientists at Arizona State University have been experimenting with oxygen exposure while breeding beetles, cockroaches, grasshoppers, dragonflies and meal worms, discovering that higher levels of O2 generate giant insects. If researchers keep going, will earth become a living horror movie?

Photo Credits: Museum of Arts and Science Macon | Softpedia | Ask Bjorn Hansen