5月20日，工作人員在美國加州圣巴巴拉縣里菲吉?dú)W海灘清理油污。

美國加州圣巴巴拉縣里菲吉?dú)W海灘一地下輸油管道19日破裂，導(dǎo)致2.1萬加侖（約7.9萬升）原油泄漏并流入大海，污染當(dāng)?shù)睾０丁．?dāng)?shù)赜嘘P(guān)部門20日表示，泄漏源頭已得到控制，但泄漏出的原油已給當(dāng)?shù)卦斐蓢?yán)重污染。新華社/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