Why is this article a good example of humans’ ability to affect ecosystems? Fake sweeteners may seem like a good calorie-saving substitute for sugar. But researchers in Europe have now found traces of one of these sweeteners at five sites in the North Sea. That might be a problem, they warn. What makes the fake sugar helpful for waistlines, they say, could be bad for the environment. This is one of the first studies to show that artificial sweeteners can end up far from shore in levels high enough to be detected, says Luca Nizzetto. This environmental scientist led the study. He works at the Norwegian Institute for Water Resources in Oslo.

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the miracle worker themeswilliam gibson

themes and meanings

(comprehensive guide to drama)

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there are two central themes in  the miracle worker: that the human spirit can triumph over even the most daunting of disabilities and that a dedicated teacher can transform the lives of those with whom he or she comes into contact. these inspirational themes have long been personified in the widely known true-life relationship between helen keller and annie sullivan, but  the miracle worker  also dramatizes collateral issues that extend beyond the particular case. underlying helen’s process of learning basic principles of what annie terms “obedience” (decorum, etiquette, and hygiene), there are more universal lessons of self-governance—the inculcation of self-restraint instead of willfulness, the development of self-discipline instead of self-indulgence. only when these lessons have been mastered can helen begin to acquire language—which, annie says, “is to the mind more than light is to the eye.”