Posted inOpinion

A River of LED Fireflies in Tokyo

LOS ANGELES — Unlike the bright cities that surround them, rivers are usually dark spots at night, recognizable only as absences between well-lit buildings and highways. That’s what makes the image of 100,000 LED lights floating on Tokyo’s Sumida River so evocative. Installed during the Tokyo Hotaru festival, these “prayer stars” are powered by solar energy and light up when touching water.