Interesting work, but the explanation seems a little at odds with research in artic mammals: https://www.wired.com/2010/03/arctic-reindeer-circadian-clock/ htt

Interesting work, but the explanation seems a little at odds with research in artic mammals: https://www.wired.com/2010/03/arctic-reindeer-circadian-clock/ https://www.wired.com/2010/03/arctic-reindeer-circadian-cloc... Or at least, it appears there's even more complexity around this than the mechanism sketched out in the summary.