Message in bottles. Placed randomly at the beach on summer holiday when people like to go to beach. It contains a fiction story about a Polar Bear named Bob that sends a letter about the condition of his family. Message in a bottle is a way to send message that relevant to the impact of Global Warming. The message says, “ TO ALL HUMAN, please stop global warming now!!!! Our child is drowning by the melting ice in our homeland. Soon…our sea surface will increase and flood your home!!! We need help to reduce CO2 in the sky, please do it before our family will be totally gone….. Bob the Polar Bear.