Official websites use .gov
A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS
A lock () or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
Section of a sediment core collected from the deepest basin of Lake Enriquillo in the Dominican Republic. USGS scientists are analyzing cores from the lake to reconstruct past changes in rainfall.
Public Domain.
