HOUSTON, Texas -- Six-year-old Valentin Marroquin went from being apparently healthy one moment to battling leukemia the next. As his mother Rosario Marroquin started searching for answers, she kept coming back to their Houston, Texas, neighborhood, and the stench that often envelopes it.
"We're the stinky neighborhood," she said. "But we've gotten so used to it that we don't know that's just how we smell."
The Marroquin family lives in the Manchester area of Houston, next to the Houston ship channel, the largest petrochemical complex in the United States. Day after day, oil refineries and petrochemical companies pump hazardous pollutants, including known cancer-causing chemicals like benzene and 1-3 butadiene, into the air.
Click here to continue reading-- From MaryAnne Fox, CNN Producer