Spiders enlisted as pollution sensors for rivers
Hunting arachnids provide better picture of chemical threats to food web
![A long-jawed spider](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2014/11/bm_spider1.jpg?fit=860%2C460&ssl=1)
EIGHT-LEGGED SENTRIES Spiders lurking along riverbanks, like this long-jawed spider, can act as sentinels for toxic pollution, telling researchers the type, location, amount, and even the source of the contaminants.
Ryan Otter