HealthI'm cracking the code to regrow human limbs Lizards and tadpoles can regenerate lost limbs – so why can't we? Biologist Michael Levin wants to use bioelectricity to do just that Opinion
LifeHow to speak Neanderthal: Perhaps we do already We know our ancestors cosied up to our Neanderthal cousins, but did their liaisons leave an imprint on today's languages? Features