HealthIt's never too late to get a tattoo, an implant – or new senses From altering your body, enhancing your senses or improving cognitive function, you need to be a risk-taker to plug into the dark arts of body modification Culture
TechnologyNew blues: The quest to make the world’s rarest colourNatural blue pigments to colour paints, inks and plastics are so hard to find that people will go to the depths of Earth to discover new onesFeatures