This bumblebee-like robot might one day pollinate plants on Mars

The machine, which weighs less than a paperclip, can flap its wings up to 400 times a second and has achieved a maximum speed of two meters (6.5 feet) per second. It can also flip and hover. “We’re just trying to mimic these amazing maneuvers that bumblebees can achieve,” says Yi-Hsuan “Nemo” Hsiao...