I have to admit, I’m not exactly sure how to describe Kartoo. It’s essentially a search engine that maps out the results graphically and shows the connections between them. Does that mean you’ll get better results? Well, not necessarily, but you’ll understand how they relate to each other.
It’s definitely one of those sites that you have to try for yourself. But if you do, try it with some basic searches that students might do. For example, search for Ecuador, or mammals and you can get some very relevant results organized in a fashion that I think would be beneficial to a budding researcher.