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

The remarkable robot dog — or more accurately, its AI-powered brain — can even handle having its legs extended by wooden poles, or having wheels attached. Short of a rocket-propelled grenade coming ...

A kirigami-skinned soft robot powered by pneumatic muscles achieves crawling, steering and obstacle avoidance, advancing ...

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