WHAT IF you still had so many more strange questions about the universe? & WHAT IF Randall Munroe, former NASA roboticist & xkcd creator, were prepared to move mountains, fill the solar system with soup & alter the space-time continuum to answer them? Whether it's how to make a lava lamp out of lava or feeding the inhabitants of New York to a T. Rex, welcome to the weird, wonderful (and sometimes terrifying) world of WHAT IF? 2  Product Information: •†ISBN:† 9781399811149 •†Author:  Randall Munroe •†Publisher:  John Murray •†Format:  Paperback •†Pages:† 368 •†Dimensions:† 12.8 x 3 x 19.6 cm