The Square Root of Summer is such a quirky book. It contains little illustrations and while it starts off like a contemporary read, it plunges into science fiction through time travel. Time travel in this case doesn’t pertain to fantastical notions of visiting another era. Here things are grounded a bit more in physics, incorporating discussions of the space-time continuum, the speed of light and the effect of gravity on one’s ageing process. If there’s one thing to be said, the main character is exceedingly smart and prides herself in her intelligence.