Noxious smoke smothered the region in 2015, as more than 2.6 million ha of land burned in Indonesia in an eco-disaster the country's meteorological agency head described as "a crime against humanity".
Then came a short-lived reprieve: three years of relatively clear skies.
Already a subscriber? Log in
Read the full story and more at $9.90/month
Get exclusive reports and insights with more than 500 subscriber-only articles every month
ST One Digital
$9.90/month
No contract
ST app access on 1 mobile device
Unlock these benefits
All subscriber-only content on ST app and straitstimes.com
Easy access any time via ST app on 1 mobile device
E-paper with 2-week archive so you won't miss out on content that matters to you
