When a hiker goes missing in a forest or a senior with dementia wanders away from a nursing home, who searches for them and under what authority? Or when authorities suspect that a person may have drowned in a lake, how do they go about recovering any remains?

Solar energy is cheaper, more efficient and more widely available than ever, but its viability was never assured. Technologies that enable the conversion of sunlight into usable electricity are the products of an uncoordinated, decades-long series of events that followed a circuitous and halting path