USGBC stands for the United States Green Building Council, which is a group of people who want to make buildings more friendly to the environment. Buildings are places where we live, work, and go to school, and they use a lot of energy and create a lot of waste. The people in USGBC want to help make buildings better for the environment by designing and building them in a way that uses less energy and produces less waste. They also want to make buildings healthier for people by improving the air quality inside. So, they've made rules and guidelines that builders and architects can follow to create sustainable and eco-friendly buildings. This helps our planet, and it helps people!