Why do our arms move to and fro when we walk?

A: To keep our torso stable and conserve energy, we swing our arms backwards and forwards while walking. When you swing, say, your right leg forward to take a step, you provide a rotational moment about the central vertical axis of your torso. By the principle of conservation of angular momentum, an opposite reactionary moment … Read more

Finding DNA clues to the primate puzzle

Primates, which include humans, apes, monkeys and lemurs are diverse in traits like brain size, diet, locomotion and habitat. Using insights from recent advances in primate genomics and studying the DNA of over 500 primate species, scientists have uncovered the genetic secrets behind their evolutionary success and ecological flexibility. A global team of scientists, including … Read more

Finding DNA clues to the primate puzzle

Primates, which include humans, apes, monkeys and lemurs are diverse in traits like brain size, diet, locomotion and habitat. Using insights from recent advances in primate genomics and studying the DNA of over 500 primate species, scientists have uncovered the genetic secrets behind their evolutionary success and ecological flexibility. A global team of scientists, including … Read more