HumansWe thought the Incas couldn't write. These knots change everything A lost language encoded in intricate cords is finally revealing its secrets – and it could upend what we know about Incan history and culture Features
Life‘Speaking’ orca is further proof they shouldn’t be kept captive An orca called Wikie who learned to mimic human speech could teach us a lot about killer whale culture – but that’s no reason to keep orcas in captivity Analysis