Article Hi, there Could you correct this little text for me? It is a translation from a Portuguese article about the oil spill on the Brazilian coast. It is just a part of the article, and not the whole thing. Could you tell me my grammatical mistakes? Crying over spilled oil I've walked the Brazilian Northeast beaches for three weeks now and I still can not come to a conclusion about this disaster. It has been relatively easy to follow southwards the wake left by this oil slick and observe its effects on sand and sea creatures. However, backtracking all the way to the slick's origin has been highly complicated. American satelites were used for that but found no trace. The oil slick seems to trick satelites. Based on photos made available by Europeans, researchers at the University of Bahia saw what could be a 22-square-kilometer new oil slick off the Bahia coast. This possibility was ruled out. Brazilian agency IBAMA flew over the region and could not spot it. It suggested that the researchers had been mistaken, as there were some clouds over the place that hindered visibility. The technique used to measure the slick is based on water rugosity/roughness. The supposedly problematic region was smooth and even. The oil was thought to hava spread all over the surface. By claiming not to have been able to track the slick, Americans indirectly confirm the idea that oil, heavier than water, sinks and flows along a lower level. Please, guys. Thank you!!!!