IN reply to Jim Wilton (Sunraysia Daily, November 27), here’s some more random data and evidence to consider. The previous Eemian interglacial was much warmer than our Holocene and sea levels were much higher than today. And in the early warmer Holocene optimum sea levels were much higher along our east coast.

During the Holocene optimum boreal forests grew right up to the Arctic coastline for thousands of years, yet today this region is just tundra and ice.