The catastrophe at a Tennessee explosives plant started in a building that made devices used for mining and detonated more than 24,000 pounds of explosives, authorities said Friday.

East Tennessee relies on alerts from agencies like the National Weather Service. Here’s what to know about emergency information amid the shutdown.

This color-coded earthquake risk map can help you determine your chances of feeling seismic activity in your area.

While California hogs the spotlight when it comes to earthquake warnings, there's a sleeping giant in the heart of America ...