I was surprised when I learned that google was launching a project to search for efficient renewable energy sources - doesn't seem like their field at all. That

I was surprised when I learned that google was launching a project to search for efficient renewable energy sources - doesn't seem like their field at all. That they are closing it now without having produced much (has anyone heard about anything they might have figured out?) makes me wonder if there was ever such a projet or if they did it just for PR.