EPA overrides scientists' calls for tougher pollutant limit

The Trump administration on Monday made final its decision to leave limits for a deadly kind of air pollutant unchanged, overriding scientific findings that tougher standards could save tens of thousands of lives yearly.

Heat wave set to sizzle southern California

A dangerous heat wave was settling over southern California on Monday, as temperature records continued to fall across the United States, from Texas to Tampa Bay.

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