Few creatures in the animal kingdom stand on two legs. In many ways, it's not very efficient or stable. So why do we do it? The big standing up experiment Calorie burner: How much better is ...

"Standing up on their hind legs allowed our ancestors to fight with the strength of their forelimbs, making punching much more dangerous." "It also provides a functional explanation for why women ...

Scientists have developed a quadrupedal robot that can use its two front legs to pick up and handle objects while walking on its hind ones. Quadrupedal robots usually take the form of robot dogs ...