Add Yahoo as a preferred source to see more of our stories on Google. Traffic backs up on the 5 Freeway as a plane approaches San Diego International Airport. Greenhouse gases from vehicle emissions ...

EPA's repeal of the 2009 endangerment finding in February eliminated the foundation of much of U.S. climate policy.

This is read by an automated voice. Please report any issues or inconsistencies here. The Trump administration has repealed the 2009 endangerment finding on greenhouse gases, eliminating the ...

The Trump administration on Thursday reversed the U.S. government’s longstanding scientific assertion that planet-heating pollution seriously threatens Americans, erasing a foundational piece of the ...

Hayley Smith is an environment reporter at the Los Angeles Times focused on climate policy, technology and solutions. She previously worked on the breaking news team. Originally from Miami, she holds ...