People haven't evolved sleep in Alaska, though. Sleep evolved waaaaayyy before humans even existed, let alone started living that close to the poles. And we've not been around for long enough for evolution to change anything about something so deeply integrated into the way our biology works as sleep.
Hikaru755 t1_j3lx1iy wrote
Reply to comment by Bsmith0799 in TIL Pluto hasn't completed an orbit around the sun since its discovery. Pluto's orbit takes about 248 years, and Pluto was discovered in 1930. by irbinator
People haven't evolved sleep in Alaska, though. Sleep evolved waaaaayyy before humans even existed, let alone started living that close to the poles. And we've not been around for long enough for evolution to change anything about something so deeply integrated into the way our biology works as sleep.