As always, "what do you mean by AI?" It's an umbrella term that can be used by some to mean machine learning, while others think of AGI research or "strong AI," and then get bogged down in whether computers can "really" think.

• https://en.wikipedia.org/wiki/Machine_learning#Applications

One of the applications I find interesting is machine learning + computer vision to improve agriculture. To automate weeding or pest removal. Though you can also combine robotics to push automation even further.