brockovich gathers soil samples from the neighborhood. eight months after a monster tonight ripped through a missouri town destroyed homes, lives and even a hospital, today, renewal, hope and healing. all right now in the cnn newsroom. big developments in a medical mystery in upstate new york. environmental activist erin brockovich is joining others trying to figure out what s going on in the town of leroy. more than a dozen students from the same schools are suffering from uncontrollable verbal outbursts and twitching. brockovich discussed a possible cause, but dr. drew pinski friday night on our sister network hln. there was a very serious train derailment that caused one ton of cyanide to spill and 45,000 gallons of tce. the actual location of the site of the derailment is four miles from this school. four miles from the school, a massive train derailment with spectacular exposure of known carcinogen s and toxins. there is a map. how did that then become an issue f