First spotted last month by a telescope in Chile, the near-Earth asteroid — designated 2024 YR4 — is estimated to be 130 to ...

Federal officials apologize for not giving San Gabriel Valley mayors a heads-up that a hazardous collection site from the ...

Hazardous materials investigators were called to a Pasadena park Thursday after a bottle of mercury was discovered in a ...

U.S. Environmental Protection Agency crews continued working Thursday to identify and remove hazardous waste from properties ravaged in this month’s wildfires, as many residents returned to sift ...