Maps were used during Alexander Wetmore's collecting in Porto Rico [Puerto Rico] for the United States Department of Agriculture (USDA), Bureau of Biological Survey. One maps is dated 1911; the others ...

Days after a 6.4-magnitude earthquake rocked Puerto Rico, followed by hundreds of aftershocks, the full extent of damage is only beginning to be realized. NASA scientists are using satellite data to ...

A minor, 3.9-magnitude earthquake struck in the Caribbean Sea on Wednesday, according to the United States Geological Survey. The temblor happened at 10:34 a.m. Atlantic time about 4 miles southwest ...

Cobblestones are blue in Puerto Rico's oldest city, evidence of its age and ties to the Old World. To walk on them is to step back more than five centuries when Juan Ponce de León walked ashore.