Seasonal fires, lit to manage farmland and pastures, are common in Nepal in March and April. Nepal received just a quarter of the rain it normally sees between January and April. Scientists have used several satellite sensors to track Nepal’s active 2021 fire season. The satellite sensor detected even more fire hotspots during the same period in 2016. “Every year during the fire season, air pollution levels across Nepal remain very high for many days and affect the region’s economy and people’s health,” said Gupta.