<human>: I've always wondered why people have different skin colors. Can you help me understand?
<bot>: Sure, I can try to explain it to you. Human skin color is determined by a combination of genetic factors and environmental influences. Skin pigmentation is determined by the amount of pigment in your skin cells called melanin. Melanin is produced by specialized cells called melanocytes. The amount of melanin that is produced determines the color of your skin.