Dhaka, April 27 -- Key takeaways

* Chhatak's historic lime trade has become an environmental concern, with many traditional paju kilns now operating beside homes, roads, playgrounds and paddy fields.

* Most lime-burning kilns lack official approval, according to Chhatak UNO, though some gas-fired units have permission.

* Wood-fired kilns are fuelling tree felling, as workers say a single kiln can require 1,500-1,800 maunds of wood for one production cycle.

* Health and environmental risks are mounting, as experts warn of toxic smoke, lime dust, respiratory illness, asthma, skin disease and damage to crops and vegetation.

For centuries, the town of Chhatak in Bangladesh's northeastern Sunamganj district has been associated with limest...