Dynamic Earth is open Wednesday to Friday from 10 a.m. to 5 p.m. and Saturday and Sunday from 10 a.m. to 5 p.m. It's closed Monday and Tuesday.

Here's What'll Happen When Plate Tectonics Grinds to a Halt. A new study says we may only have another 1.45 billion years to enjoy the dynamic action of Earth’s geologic engine.