Thanks for this comprehensive response (I didn't expect any less from HN ;) I understood the part about O18 ending up less in the glaciers but I couldn't reall

Thanks for this comprehensive response (I didn't expect any less from HN ;) I understood the part about O18 ending up less in the glaciers but I couldn't really grasp that if the water is in glaciers it isn't in the sea. I also thought it would be impossible to get rid of influence of the temperature (gradient with depth, latitude, ocean currents, ...) but it's probably not impossible, just difficult. Also for anybody who doesn't click in the "loooooong" version has 6 volumes...