Frogs croak higher because Climate Change

Frösche in Puerto Rico quaken anscheinend in höherer Stimmlage, weil Klimawandel: „[Scientists] have found that the pitch of male coqui frog calls in Puerto Rico has changed over the twenty two year period between 1984 and 2006, which appears to correlate with the amount of air temperature increase the frogs have been exposed to due to global warming.“ (Vorher auf NC: My Voice is higher than your Voice).