PALEMBANG, Indonesia — Schools in the capital of Indonesia’s South Sumatra province switched to remote learning Wednesday as worsening haze from forest and peatland fires pushed air pollution to unhealthy levels, adding to disruptions that have already affected more than 1.4 million students across the country, officials said. Indonesia has been plagued by forest and land fires for decades but an intensifying El Nino pattern and a prolonged dry season made the impact of the fires especially dire this year. Toxic haze and smoke have spread far beyond Indonesia’s borders in Southeast Asia, creating a regional health crisis. The smoke has drifted as far as the Philippines, more than 800 kilometers (500 miles) away, and breached Malaysia’s emergency-level threshold, forcing authorities to declare an emergency last week in a town in Sarawak state on Borneo Island. …Large fires have burned thousands of hectares in Indonesia’s Kalimantan and Sumatra regions.