We had a Medieval warm period. We had a little ice age. Now the little ice age is over and it’s getting warming. It’s not surprising; you end an ice age, temperatures do get warmer. Climate change is standard. The concern should really be: in the past, mankind adjusted to climate change. We need to adjust to the change in climate. […] We need to be thinking in terms of shifting with the climate, because the climate shifts. The climate changes.