A central Greenland ice core shows an interesting temperature record going back about 50,000 years.
Well what do you know – there was a “hockey stick” shaped increase in temperatures. But let’s look back a little farther:
Around the year 1000 there was a Medieval Warming Period (MWP) followed by a Little Ice Age (LIA). How about even further back:
What we see is a cooling trend for about 3,000 years. That little hockey stick leaves us still cooler than average.
In the historical perspective, recent warming is almost invisible.
