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.

Habitat loss from river warming has contributed to population declines in North American populations of Atlantic salmon.

Westend61/gettyimages

PITTSBURGH — Salmon may now have their own version of human air conditioning.