In issue #18 of The Comet Newsletter, the focus is on recent advancements in AI and machine learning, including a report on how major tech companies are internally addressing AI ethics, with examples from Google and Microsoft, and the debate over whether these companies or regulatory bodies should enforce ethical standards. New projects highlighted include Facebook's Generative Spoken Language Model, which aims to expand NLP capabilities by learning from raw audio without text, Google's innovative 3D dance generation model that uses cross-modal transformers, and a new TensorFlow Python package designed to streamline the training of similarity models through contrastive deep learning. These projects demonstrate diverse approaches to overcoming challenges in AI, from ethics and language model limitations to creative applications like dance generation.