Bird excrement may be cooling the Arctic

(Phys.org)—A team of researchers with members from Canada, Sweden and U.S. has found that bird excrement may be playing a role in cooling the Arctic during its warmer months. In their paper published in the journal Nature Communications, the team describes how they found higher than expected seasonal levels of ammonia in the air during trips they took to Arctic sites, how they traced it to bird feces and then modeled the impact it might be having on the local environment.