This document outlines the key concepts of sustainable development including its definition, branches, goals and conclusion. Sustainable development is defined as meeting human development goals while sustaining natural systems. It has three branches - environmental, economic, and societal. The goals include eliminating poverty and hunger, ensuring health and education, achieving gender equality, clean water/sanitation, affordable energy, economic growth, reduced inequality and more. The conclusion states sustainable development depends on efficient resource use and the future is in people's hands.