Exoskeleton steps out 👣 After years of development, researchers in the Stanford Biomechatronics Laboratory have revealed a “robotic boot” that will help wearers walk and run faster, with less effort. The ultimate aim is to help people with mobility impairments, particularly older people, move throughout the world as they like. With this latest breakthrough, the research team believes the technology is ready for commercialization within a few years. More ➡️ stanford.io/3glYFVc 🎥: Harry Gregory

The red-eyed tree frog’s iconic eyes startle predators—but when closed, its eyelids help it blend in with its leafy environment. | National Geographic History