It's said that during extended missions, astronauts' calluses vanish from the base of their feet but reappear on the top, because this is suddenly a very crucial body part for keeping them upright and steady.
People here at Huntington Beach have found tar balls on the bottoms of their feet and on their skin, which Orange County public health officials warn could cause skin irritation.
You're tiptoeing through your lounge late at night, and suddenly that stabbing pain, the expletives and the inevitable question: " Why do we have so much of this stuff all over the place? "
Over the following months, she gradually started to experience various neurological symptoms — the bottoms of her feet became numb, and this spread to her lower legs along with a dull pain.
The two researchers note that radiation from the sun is not the main cause of some melanomas on body parts like the hands, the bottom of feet, and the inside of noses.