Robots for iPad is equal parts creepy and cool, and it's one of the most informatively fascinating apps you'll find on the subject of artificial intelligence. Bursting at the seams with well over 100 real-world robots that range from freakish human lookalikes to quasi-sentient kids toys, this exhaustive app is a repository of incredible information about the history of our mechanical pals. Each entry features detailed photos, historical rundowns, tech specs, neat factoids, and embedded links to related articles about the robotic creation in question.
For those of a certain age, the Encyclopaedia Britannica was the Google of our childhood -- a vast resource of information that could save the day for school projects or simply expanding our minds. But now, in a true sign of the times, the publisher is closing the books (pun intended) on the print edition.