Prior to Katrina, the South Bronx and New Orleans' Ninth Ward had a lot in common. Both were largely populated by poor people of color, both hotbeds of cultural innovation: think hip-hop and jazz. Both are waterfront communities that host both industries and residents in close proximity of one another.

Even when we think or talk about recycling, lots of recyclable stuff ends up getting incinerated or in landfills and leaving many municipalities, diversion rates - they leave much to be recycled. And where is this waste handled? Usually in poor communities.

I personally think that gentrification happens long before you start seeing white people in formerly people-of-color neighborhoods. It starts happening when we start telling the young, hard-working, quote-unquote 'smart' kids that they need to measure success by how far they get away from our communities.

As a black person in America, I am twice as likely as a white person to live in an area where air pollution poses the greatest risk to my health. I am five times more likely to live within walking distance of a power plant or chemical facility - which I do.