On top of the many practical questions about how to deploy artificial intelligence (AI), a new set of concerns have arisen about its external costs and energy efficiency. The problem is that AI, especially in its machine learning (ML) and deep neural network varieties, is quickly becoming environmentally unfriendly. Computer science practitioners are looking for how to reduce energy use in the near-term, and researchers are exploring more fundamental answers, including the development of entirely new computing models. For more on this topic, please, read this article in Forbes by NTT Research President and CEO Kazuhiro Gomi.