Where are you? Every meal, every drink, every breath, and every moment of contact with the air is an exchange with the rest of the world, in the form of carrots, whiskey, oxygen, germs, exchanging for dead cells, faeces, CO₂, shed hairs. Look at a picture of yourself from one, 10, 20, 30 years ago...how much of that "you" remains? Click here or anywhere on the photo to return to the website.