As smoke from Indonesia ’s burning forests drifted across the Strait of Malacca into Singapore last June, the pollution index shot up and Ong Eng Tong’s golf course shut down. “Once the PSI reaches 150 or 200, they have to close,” said Ong, a 71-year-old independent energy consultant. His Singapore Island Country Club was overwhelmed as the Pollutant Standards Index surged on June 21 to a record 401, a “hazardous” reading in a city averaging less than 50 on most days. “I stayed indoors and turned on the air-con.” This year may be worse, stoked by drought and El Nino. Backed by activists including Harrison Ford, Singapore is pushing fines for culprits overseas. Even Indonesia is faulting last month’s local response to blazes that sickened 50,000 in Sumatra, where fires are set to turn forests into crop fields. Burning in the region’s peatlands emitted as much […]