Twins Days is also about the science of attraction ... Shawn Riggins, 45, wears a T-shirt with images of his twin brother Shane’s face and a festival badge bearing both their names.

In it, Lightman has penned 35 essays about scientific understanding, each following photos of spectacular natural phenomena .

Science often pushes back the boundaries of the known world to explore new topics and make the invisible visible. In the process of this work, in addition to a purely scientific documentation of ...