Some friends and I were debating how long it takes for food to digest within our bodies, and then the total time it stays until it is excreted. Please settle this issue for us.
Union of Uranus
Why are some people born blond but turn brunette as they get older?
How do tattoos work? I mean, if human skin cells are always shedding and reproducing themselves, how are the pigments of a tattoo able to stay in the skin for so long?
My husband and I both have brown eyes but our new baby has blue eyes. How come?
Does aromatherapy actually work or is it just a myth?