Tanvir Ahmad Tanvir Ahmad is climate change and public health researcher at International Centre for Diarrhoeal Disease Research, Bangladesh (icddr,b). He can be reached at tanvir12urp@gmail.com. Lead pollution: A silent epidemic threatens Bangladesh The consequences of lead pollution may not always be visible, but they are undeniable. 23 September 2023, 06:00 AM Lead pollution: A silent epidemic threatens Bangladesh The consequences of lead pollution may not always be visible, but they are undeniable. 23 September 2023, 06:00 AM