Invasive insect tied to shrinking river
![](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2014/07/ticker_woolly_free.jpg?fit=860%2C460&ssl=1)
By coating and killing eastern hemlock trees, woolly adelgids (white) can also alter the flow of rivers, a study says.
Nicholas A. Tonelli/Wikimedia Commons (CC BY 2.0)
By coating and killing eastern hemlock trees, woolly adelgids (white) can also alter the flow of rivers, a study says.
Nicholas A. Tonelli/Wikimedia Commons (CC BY 2.0)