On the eve of Earth Day, President Joe Biden announced the creation of an Office of Environmental Justice as he lays out a plan to make it “the mission of every single executive agency,” the White House said.

As part of an executive order, the new office will coordinate environmental justice efforts across the federal government. The order presses agencies to close gaps in data and use scientific research to understand and prevent the damage to people’s health brought by pollution. 

The White House calls it “the most ambitious environmental justice agenda in our nation’s history.”

The action is the result of nearly two decades of organizing by the environmental justice movement, said the Climate Justice Alliance, a nonprofit representing 89 rural and urban community-based environmental justice organizations.

“This win belongs to our communities who have been on the front lines of the climate crisis, creating solutions, building local power and engaging lawmakers for decades,” said Ozawa Bineshi Albert, co-executive director of the alliance.

Earth Day:What could 2050 be like? Their answers might surprise you.

Here’s what we know. 

What is environmental justice?

Environmental justice is “the fair treatment and meaningful involvement of all people regardless of race, color, national origin, or income with respect to the development, implementation and enforcement of environmental laws, regulations and policies,” according to the U.S. Environmental Protection Agency.

The executive order seeks to “better protect overburdened communities from pollution and environmental harms,” recognizing that “racism is a fundamental driver of environmental injustice,” the White House said.