As more cities face this issue, experts argue over which products to blame.

In 2008, using nationally representative survey data on global warming beliefs, behaviors and policy preferences in the United States, Yale and George Mason Universities identified six distinct groups of Americans - "Global Warming's Six Americas."

The standards require new cars and light trucks build after 2025 to get about 50 miles to the gallon.

Some Delaware County residents are trying to stop a factory farm with more than 10,000 hogs.

San Francisco and Oakland, California say the companies put greenhouse gases into the air. That causes sea levels to rise, which creates a "nuisance" for the state of California.

The Indiana Department of Natural Resources is trying to raise awareness about a new fishing rule intended to prevent the spread of Asian carp.

Vectren wants to use some of the money from a proposed roughly $940 million rate increase to pay for a new natural gas plant at its station near Evansville.

The original legislation was written in response to the 2010 BP oil spill into the Gulf of Mexico.

A union representative says some employees feel the White House no longer supports the EPA's mission.

The Obama-era Waters of the United States rule outlines which bodies of water can be regulated by federal agencies and expands it to smaller bodies of water like rivers and lakes.