Washington Post: Under the watchful eyes of scientists, a little forage fish that lives off the southern coast of Maine developed a strangely large appetite. Killifish are not usually big eaters. But in warmer waters, at temperatures projected for the future by climate scientists, their metabolism and their appetites go up, which is not a good thing if there are toxins in their food. In a lab experiment, researchers adjusted temperatures in tanks, tainted the killifishs food with traces of methylmercury and...