On a dusty test site in Australia, a spider-like robot is quietly rewriting the rules of construction, extruding walls in looping arcs instead of stacking bricks by hand. The same technology that lets ...

It’s well understood that spiders have poor eyesight and thus sense the vibrations in their webs whenever prey (like a fly) gets caught; the web serves as an extension of their sensory system. But ...

A dog faces off against a robot spider in a funny skit.