Explore the challenges of creating humanoid robots, in these video excerpts from NOVA: Rise of the Robots. The excerpts, from science fiction movies, demonstrate how people have imagined humanlike robots; however, in reality, there are still many technological problems to overcome. Some of the biggest challenges in robotics are developing mobility, manual dexterity, and the ability to sense and understand the environment. The DARPA Robotics Challenge asked teams to design and test semiautonomous robots that could help in disaster scenarios. See how two teams designed bipedal humanoid robots for the competition. This resource is part of the NOVA Collection.