Julia Rosen is a freelance journalist based in Portland, Oregon. She writes about science and the environment for publications including Science, Nature, Orion, and High Country News, as well as many others. Follow her on Twitter @ScienceJulia, and find more of her writing at www.julia-rosen.com.
In trying to untangle a mysterious herring collapse from the aftermath of the Exxon Valdez oil spill, scientists in Prince William Sound are revealing just how resilient—and unpredictable—marine ecosystems can be.