Meera Vashisht was working on a science project in her school in Texas last year when she first heard about the Indian government’s move to replace each of the 77 crore existing bulbs with powersaving light-emitting diode (LED) ones.Meera, who was born and brought up in America and is a seventh grader in Sartartia Middle School in Sugar Land, began to think hard: would it be really possible for India’s […]