Terraced rice paddies and vegetable fields in India’s Himalayan region sit close to where the Bhagirathi and Alaknanda rivers meet to form the Ganges, India’s sacred river. Photo Dhruv Malhotra for ...

On March 27, amid a flourish of national attention, Utah’s Republican Governor Spencer Cox signed much-debated legislation that bans adding fluoride to the state’s public drinking water systems. The ...