Humans and most all creatures have through evolutionary processes developed incredible functionalities with unbelievable efficiency. Scientists and engineers recognized this and have sucessfully trying to mimic what biology has found as lasting solutions to a need. For example, how to design a robot that can walk with minimal energy use. The early Honda AZIMO robot used ten times more energy to walk than a human even through it weighed as much as a human. These days, companies such as Boston Dynamics are able to get close to human efficiency with their humanoid robots. They achieved this by closely studying how humans walk; most of the time we just lean forward and constantly catch ourselves from falling on our face thereby moving forward in an extremely energy efficient fashion. In running an exaggerated version of this is called chi-running. Many labs at universities and industries have developed bio-mimetic robots of all kinds ranging from human legs walking without any enegy, to robot geckos climbing up glass walls, to flying birds and buzzing insects. Many of these developments find their way into the humanoid and android robots as well as robot versions of creatures other than human. One example is tiny bee robots for pollination.