50 years ago, chemical pollutants were linked to odd animal behavior
Excerpt from the September 18, 1971 issue of Science News
![sewage runoff pours out of a drainpipe](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2021/09/081321_aa_50ya-chemical-pollution_feat.jpg?fit=1030%2C580&ssl=1)
Chemical pollutants can disrupt aquatic creatures’ delicate sense of smell, scientists have found. A chemical common in sewage runoff (shown) has been shown to disrupt some fishes’ ability to form schools.
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