5月20日，工作人员在美国加州圣巴巴拉县里菲吉欧海滩清理油污。

美国加州圣巴巴拉县里菲吉欧海滩一地下输油管道19日破裂，导致2.1万加仑（约7.9万升）原油泄漏并流入大海，污染当地海岸。当地有关部门20日表示，泄漏源头已得到控制，但泄漏出的原油已给当地造成严重污染。新华社/法新

A crew cleans oil from the beach at Refugio State Beach on May 20, 2015 north of Goleta, California. About 21,000 gallons spilled from an abandoned pipeline on the land near Refugio State Beach, spreading over about four miles of beach within hours. The largest oil spill ever in U.S. waters at the time occurred in the same section of the coast where numerous offshore oil platforms can be seen, giving birth to the modern American environmental movement. David McNew/Getty Images/AFP