One secret is their specialized hind wings. High-speed cameras show that flies' modified hind wings help with their speedy ...

If you live in the Miami Valley and have been outdoors lately, chances are you have been swatting hover or syrphid flies. They are not the same as sweat bees.

They had radar. They would be looking at me, talking, and swat a fly 90 degrees to the right or left without so much as a glance. A flick of the wrist. Pay dirt! But then plastic swatters came along.