WASHINGTON --The latest revolutionary robot isn’t the metallic, costly machine you’d expect: It’s squishy like Silly Putty, wireless, battery-less and made for pennies by a 3D printer. Meet Octobot.

With their quick-change camouflage and high level of intelligence, it’s not surprising that the public and scientific experts alike are fascinated by octopuses. Their abilities to recognize faces, ...

Scientists have made a truly bizarre discovery on an expanse of cooled lava 150 miles west of Costa Rica and nearly two miles underwater. There, they laid eyes on more than a hundred female octopuses, ...