No - just the temperate climates will grow cold and the cold climates will become warm.
Happens periodically. 16,000 years
whats the +/- on that date range? 'cause ya know, snow & all…
moar seriouly, Mag Dec has been increasing for decades (diff btween MagNth & "True" north ignoring mapGrid Nth)….
so WhatIF? … dino wiped out by a "pole swap"? and about to habben again?
what if our ball rock hurtling through space is COLD inside? magma etc created by friction, in crust, but interior is Frozen? ask'n for a fren