Pumping cold water into rivers could act as ‘air conditioning’ for fish
In experiments, hundreds of fish sought shelter from summer heat in the human-made plumes
![An underwater photo of three Atlantic salmon swimming in a river.](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2023/10/102423_N_fish-cooling-stations_feature.jpg?fit=1030%2C580&ssl=1)
Habitat loss from river warming has contributed to population declines in North American populations of Atlantic salmon.
Westend61/gettyimages