Aigen is building solar-powered, autonomous robots using computer vision. In its first incarnation, the robot is covering up to three acres of farmland per day.

Even though the only thing the robot can do right now is pull weeds Aigen is on a mission to terraform the earth, and says it has a path toward making agriculture carbon negative. 

They are collecting data through images from multiple cameras on the robot, and using AI to identify plants and various objects. Once they know what they are looking at, they will either remove or propagate the plants with two robot arms underneath the robot.

https://techcrunch.com/2022/01/18/aigen-fund-round/