Bronze Age ice skates in western China; evidence of horse-riding 5000 years ago; lake pollution by early Maya city; Norse god Odin in early runic inscription
Early ice skates from western China may show Bronze Age ties with Europe
Kurgan remains suggest they were riding horses by 3,000 BC, much earlier than though
Lake sediment study shows how Preclassic Maya city polluted the nearby lake
Runic inscription on Danish find is oldest known mention of Norse god Odin