In Texas, seven emergency workers are suing the Arkema chemical company after they were exposed to toxic chemicals and hospitalized after an explosion at a plant outside Houston that was flooded by waters from Hurricane Harvey. At least two tons of volatile chemicals known as organic peroxides burned after cooling systems at the plant failed. Attorneys say the first responders were never told about the dangers of the resulting chemical plume, which FEMA Director Brock Long later called “incredibly dangerous.” Click here to see our 'toxic tour' of the Petro Metro.