Like a spindly steel insect, the Rima Light from Dreipuls stalks your desk and plants its legs amongst the detritus carelessly strewn thereon. Unlike an insect (unless it's a giant, adjustable firefly ...

One of summer's most magical sights is an otherwise ordinary field or backyard illuminated by tiny, pulsing points of living light, as fireflies emerge at dusk. And now, a handheld gadget called the ...