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Articles of Significant Interest Selected from This Issue by the Editors

The impacts of chemical dispersants on oil-degrading bacteria are poorly understood. Using bacterial strains isolated from sediments impacted by the Deepwater Horizon oil disaster, Overholt et al. (p. 518 –527) showed that each species had a unique response to dispersed oil, as compared to crude oil with opposing impacts on toxicity, as determined by an EPA-approved marine rotifer assay. Both strains grew with dispersant as the sole carbon and energy source. While some species have the potential to enhance the toxicity of crude oil by producing biosurfactants, these same bacteria may reduce the toxicity associated with dispersed oil through degradation or sequestration.