Scientists used a novel fingerprinting technique to identify the source of oil sheens that appeared in late 2012 near the site of the Deepwater Horizon disaster.
Oil and water don’t mix, right? For the most part, that’s true. Oil is made up of many compounds, the majority of which are not water soluble or “non-polar” in scientific terms. When oil enters water, such as from a spill, most of it gathers together in balls or sheets.