Robert Bullard defines environmental justice as the principle that all communities deserve equal protection, access, and enforcement regarding environmental issues. He explains how he became involved in 1978 when his wife sued the state of Texas over a proposed landfill in a middle-class Black community. His sociological research revealed a pattern of landfills and incinerators disproportionately located in Black neighborhoods in Houston, despite Black residents making up only 25% of the population. This issue was not solely about poverty, as even middle-class Black neighborhoods were targeted, highlighting a systemic lack of representation in decision-making.

Bullard connects environmental justice to climate change, explaining that climate change disproportionately impacts already vulnerable communities, regardless of their contribution to the crisis. He argues that factors like sea-level rise and increased disasters will intensify existing inequities. He emphasizes that climate change is not just about greenhouse gases but also about who is most vulnerable to its effects, such as flooding and droughts. Historically, low-income and minority areas are often in low-lying, flood-prone regions, making them more susceptible to the devastating impacts of climate-related events.

Bullard recounts his personal experience during Hurricane Harvey, highlighting that even well-off areas flooded, but historically vulnerable communities, primarily African American and Latino, were hit the hardest. He notes Houston's lack of zoning laws, which has led to haphazard development, including building in floodplains. Harvey served as a "wake-up call," forcing different community groups, historically divided by socio-economic and racial lines, to collaborate. A coalition of almost three dozen groups formed, adopting an equity framework for future development and flood mitigation projects, influencing Harris County's approach.

Bullard states that Houston remains segregated racially and economically, with affluent and low-income populations increasingly separated. This segregation is driven by housing affordability issues, leading to concentrations of low-income families and families of color in areas where housing is cheaper. He coins the term "pollution segregation," explaining that as these communities become more concentrated, more pollution is directed towards them. He argues that even middle-income African Americans are more likely to live in polluted areas than low-income white individuals, due to institutional racism in housing.

Bullard hopes that environmental catastrophes like Harvey will continue to foster unity and a realization that society is "in the same boat." He argues that when society fails to protect its most vulnerable members, everyone is put at risk. He asserts that a justice and equity framework is the logical approach, acknowledging that it often takes a "two-by-four" to the head for society to accept this reality. He believes Houston Post-Harvey has changed mindsets, making previously "invisible" communities visible. He concludes that confronting climate change head-on requires a justice framework that considers vulnerability and ensures solutions do not further marginalize populations, regardless of political beliefs about climate change itself.