Russ Steele
David Lappi is a geologist from Alaska and he sent Jo Nova this graphic of temperatures taken from the Greenland GISP2 Ice Cores for the last 10,000 years. Details here.
It appears that the world has been a little warmer in the past, with huge swings in temperature, but the over all trend is cooling. Interglacial periods usually last 10,000 to 12,000 years and we are coming to the end of the current interglacial period. So our little warming, shown in red, does not look that significant.
David Lappi is a geologist from Alaska and he sent Jo Nova this graphic of temperatures taken from the Greenland GISP2 Ice Cores for the last 10,000 years. Details here.
It appears that the world has been a little warmer in the past, with huge swings in temperature, but the over all trend is cooling. Interglacial periods usually last 10,000 to 12,000 years and we are coming to the end of the current interglacial period. So our little warming, shown in red, does not look that significant.
