An artificially intelligent pilot created by Google and Loon can keep huge stratospheric balloons in the air for hundreds of days at a time to act as floating cell towers in remote areas
Source:
https://www.newscientist.com/article/2261369-googles-ai-can-keep-loon-balloons-flying-for-over-300-days-in-a-row/?utm_campaign=RSS%7CNSNS&utm_source=NSNS&utm_medium=RSS&utm_content=home