Sustainability as a discipline explores how human activities can be altered to meet the needs of both current and future generations to ensure long-term sustainability of the Earth’s environmental systems and resources. This interdisciplinary subject blends multiple subject areas including, but not limited to, the sciences, social sciences, education, governance, and business management in an effort to explore how humans can balance environmental, social, cultural and economic needs while restoring and or maintaining the Earth’s natural systems (atmosphere, hydrosphere, etc.). The primary challenge of this discipline to meet the needs of current human populations, while ensuring that future generations have the resources they need to thrive as a society and protect the various natural resources and ecosystems that support life on Earth.