These four YouTube videos discuss different aspects of artificial intelligence and machine learning. The first video provides an overview of what AI is and its capabilities. The second video focuses on deep learning and neural networks. The third video discusses self-driving cars and how AI is enabling autonomous vehicles. The fourth video explains AI assistants and chatbots, looking at how conversational interfaces are being developed.

1. https://www.youtube.com/watch?feature=player_embedded&v=Jloe-PyelbU
http://www.youtube.com/watch?v=d4oNtZmh_rc
http://www.youtube.com/watch?v=mmrxi734dpA
http://www.youtube.com/watch?v=x20_9HxAi0U