Dirty Secrets - What's Really in Our Air? Dispatches : Season 30 Episode 4
Channel 4 int(0)
Aired: February 22nd, 2016 @ 8:00 PM EST on Channel 4
People are breathing in more harmful pollutants than official figures suggest. Morland Sanders uses high-tech monitoring equipment to identify hidden pollution hot-spots and talks to experts about the effect this is having.