Officials racing to prevent an overheating chemical tank in California from exploding breathed a small sigh of relief after confirming Monday a crack in the structure had helped reduce pressure inside,

Californian authorities have scaled back the evacuation zone for the Garden Grove chemical tank emergency in Orange County after determining the risk of a “catastrophic” explosion had passed, though a...

The overheating tank forced the evacuation of more than 40,000 people across Garden Grove and neighboring cities, as authorities warned that the situation could end in an explosion or a large-scale ch...