Climate change has become such a big issue. Scientists has reached a solution that reducing our own carbon footprint can contribute to the mitigate current situation. What was on my mind is, the bigger the house we live, the more energy we use for facilities, and the more energy used (more carbon footprint) in our daily lives. Also, living in a bigger house is easy to feel lonely, cold, and cheerless. The physical distance between family members are bigger, the space and relationships become more isolated even individuals are just a couple of footsteps away. So the main idea my postcard is trying to convey is to live in smaller houses, reduce our excess energy use, and have a cosier family atmosphere by closing up the physical distance between each other while at home.