Where did you read these? People's life is wrong to me. Lives is the plural of life. Because people is a plural noun, it should be people's lives. Lives-prounounced lahyvs is plural of life Lives-prounounces livs is a conjugation of the verb to live.

Life and live are two related words that refer to the state of living. The main difference between life and live is that life is a noun that refers to existence while live is a verb that refers to remaining alive.