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

As California officials rushed to cool down a chemical tank at risk of leaking or exploding, they said they're evaluating additional measures to neutralize the threat to more than 40,000 residents and...

The tank, which is located in the southeastern corner of the GKN Aerospace facility in Garden Grove, California, holds somewhere around 7,000 gallons of methyl methacrylate, a highly toxic, highly fla...