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Science 7 June 2002:
Vol. 296. no. 5574, pp. 1784 - 1785
DOI: 10.1126/science.296.5574.1784b
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News of the Week

ECOLOGY:
Signs of Stress Seen in Snowmobile Season

Jay Withgott

As biologists, recreationists, and policy-makers debate whether snowmobiles should be allowed in U.S. national parks, a new study of animal feces suggests that the noisy machines raise the stress hormone levels of elk and wolves. It's not clear, however, whether the glucocorticoid levels measured are detrimental to the animals

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Science. ISSN 0036-8075 (print), 1095-9203 (online)