As AI is becoming more pervasive in our lives, its impact on society is more significant, raising ethical concerns and challenges regarding issues such as value alignment, safety and security, data handling and bias, regulations, accountability, transparency, privacy, and workforce displacement. Only a multidisciplinary effort can find the best ways to address these concerns, including experts from disciplines such as ethics, philosophy, economics, sociology, psychology, law, history, and political science. In order to address these issues in a scientific context, AAAI and ACM have joined forces to start a new conference, the AAAI/ACM Conference on AI, Ethics, and Society.