By analyzing the natural vibrations of a saguaro, scientists can study the cactus's insides without cutting them open.

The 5.4 quake struck just after 9:30 a.m. Alaska Time and was centered in a remote coastal area about 110 miles south of Anchorage.

A 6.7-magnitude earthquake off Japan’s Iwate coast sparked a tsunami advisory, highlighting once again why Japan faces so ...