Oh, like the Little Ice Age ending in the late 1800's from when Climatologist start their temperature charts That average global temp hasn't risen in 20 years Artic ice while it has thinned has become far more expansive Antarctic ice has also expanded in general Polar bear population has tripled in the last 20 years
Hard to have conclusive insight when there is no data on over half the polar bear populations
Though the groups there is data shows overall increases over the 70 years of monitoring