I suspect that the author of the article about Adam may have been a bit overzealous when she described the robot as "revolutionary."
First, I have to give Professor Russell credit for some extremely clever names: Adam (ADAptive Mobile robot), and Eden (EDucational ENvironment).
That said, nothing in the article suggests there is anything remarkable about the robot. The most telling line in the article is "Adam was activated with a basic level of competence, which let him know to back off if he hit a wall, and to feed when he saw a flower." That's two very important abilities Adam didn't have to learn.
It is certainly possible that Adam uses some revolutionary AI algorithm, and if so I would be very interested in it, but I have a hunch that Adam is just an exercise in building a basic robot with a basic learning algorithm and a clever naming scheme.