I can hear the patter of little footsteps as my child, who is supposed to be getting ready for a bath, comes hurrying down the stairs, shouting fireflies; I see fireflies. Can we go see them? It’s a ...

They’re a summertime staple in certain regions, and some of the most efficient lights in the world. This week, we’re dimming the lights to get a clear view of fireflies. * Let’s get right into HOW ...