Since the Paris Climate Agreement took effect in 2016, 121 countries have pledged to become carbon neutral by 2050 as the world tries to reduce its fuel consumption. The Korean government unveiled its 2050 Carbon Neutral Strategy on December 7, 2020 and declared Carbon Zero, making transition to new and renewable energy a topic of conversation. Recently, a joint research team from POSTECH and Korea University developed a radiative cooling material that can reduce energy consumption by selectively reflecting or transmitting sunlight.