Juan Parras, director of the environmental justice group T.E.J.A.S., speaks to a busload of passengers on the Justice40ward “toxic tour.” According to WE ACT for Environmental Justice, Houston ranks first in the nation for concentrations of mercury, formaldehyde, benzene, 1-3 butadiene, and other toxic chemicals in the air, "leading to sickness ranging from asthma to cancer to infertility."

Photo: Buzz McBride, courtesy of WE ACT for Environmental Justice