Hoang Bich Thuy is the country director of the Viet Nam Program at the Wildlife Conservation Society.
Nguyen Dinh Thang is an information and design assistant at the Viet Nam Program of the Wildlife Conservation Society.
That stretch of roughly 85 miles, widely known as "Cancer Alley," is home to dozens of refineries and chemical plants and to many predominantly Black communities.
The figure, delivered under questioning at a hearing repeatedly interrupted by protesters, marked an increase from the last official estimate and drew immediate criticism from Democrats on the committee.