Eskom Holdings, South Africa’s coal-reliant power utility, has become the world’s biggest emitter of sulphur dioxide, a pollutant linked to ailments ranging from asthma to heart attacks, the Centre for Research on Energy and Clean Air (CREA) said. Eskom produced 1 600 kilotons of the pollutant in 2019, the latest year for which comparable data is available, according to the report released on Tuesday by CREA, an air-pollution research organization. That was more than any company, and the total emission of the power sector of any country with the exception of India.