After four years of hype, Optimus shows some progress, yet the humanoid struggles to prove it's worth beyond staged demos.

RoboFalcon 2.0 mimics bird wing motions Robot achieves self-takeoff and low-speed flight Wing system couples flapping, sweeping, folding ...

Results quickly improved. One run showed a 12% boost, then 28%, 43%, and finally a 63% leap. That placed Zetta in second ...