When Katrina hit, the nation saw tens of thousands left behind in New Orleans. Ten years later, it looks like the same people have been left behind again.
A divided Supreme Court ruled against the Obama administration's attempt to limit power plant emissions of mercury and other hazardous air pollutants.
Activists from across the U.S. met Apr. 18 to convene the Populism 2015 Conference for "Building a Movement for People and the Planet."
"We must act now to address global climate change and promote the creation and maintenance of good jobs in the clean energy economy."
The environment is no longer a niche topic backed by a passionate minority, Achim Steiner said, but is clearly linked to economic and societal issues.
Planet Earth is facing a double whammy - an environmental meltdown and an economic crisis.