HumansListen to the oldest known conch shell horn from 18,000 years ago An 18,000-year-old conch shell originally found in the Pyrenees mountains in 1931 may have been used as a musical instrument by Magdalenian people ¿ìè¶ÌÊÓÆµ
HumansIf the multiverse exists, are there infinite copies of me? According to the many-worlds interpretation of quantum mechanics, the universe is constantly dividing and taking you with it – so would you recognise your other selves if you met them? Features