Throughout history, human being has seen the world as an inexhaustible resource. Especially after the industrial revolution, mankind went into a consumption frenzy and all resources were ruthlessly plundered for the sake of development, until the balance of the world was disturbed. After these warnings, which are seen as climate change, various environmental disasters and diseases, development models that are compatible with the world started to emerge. The most important of these is the sustainable development model. According to this model, any invention or development should be in harmony with the environment, society and economy. Exactly related to this issue, studies that gave us hope were presented at the “3rd International Academic Researches for Sustainability 2021” conference held with the support of Istanbul University-Cerrahpaşa. I am delighted to be the editor of this book, which presents some of these studies. I would like to express my sincere gratitude’s to all my colleagues who contributed. I hope that the book will be a useful resource for anyone who is interested in the subject of sustainability and does research on this subject..