The vulture collapse is the clearest case anywhere of an environmental catastrophe destroying a religious practice. From the early 1990s the veterinary anti-inflammatory diclofenac, given to cattle, entered the food chain and proved lethal to Gyps vultures, which suffered renal failure after feeding on treated carcasses; India lost well over ninety-five percent of its vulture population within about a decade, and Maharashtra effectively lost all of them. Without vultures the dokhma does not function — bodies desiccate slowly rather than being reduced in hours. The Bombay Parsi Punchayet installed solar concentrators at Doongerwadi to accelerate desiccation, which work in dry weather and poorly through the monsoon, and has explored captive vulture breeding aviaries. Meanwhile a growing number of Parsi families choose cremation or burial, and in 2015 a prayer hall was opened at the Worli crematorium so that the funerary prayers could be said there; some priests refuse to officiate at it and have themselves faced sanction. The dispute over what the religion actually requires — the specific method, or the principle of not defiling the elements — is unresolved.