In this short story, a gigantic oil spill pollutes the Gulf of Mexico: a terrorist act against humanity. After several months all oceans are covered with an oil film... and there is no more rain.
Source: GodLikeProductions ; Google Translate
Note: This is a Google (German to English) translation of Gustav Meyrink's "Petroleum, Petroleum" short story. Therefore, I cannot guarantee the accuracy of the translated words. If you want to read an official translation, the story is found for sale in the book The Opal (and Other Stories) by Gustav Meyrink. I have no affiliation with Amazon or this book publisher.
The original German short story can be read at Spiegel.