Arctic warmest in 2000 years
A study published in the journal Science finds that temperatures in the Arctic over the last ten years were higher than those of any other similar period in the last 2,000 years.
Samples from ice cores, tree rings and lake sediments from 23 sites were used by the team, led by Darrell Kaufman of Northern Arizona University, to provide snapshots of the changing climate.
Geologists were able to track the summer Arctic temperatures as far back as the time of the Romans by studying natural signals in the landscape.
The results highlighted that for around 1900 years temperatures steadily dropped, caused by a fluctuations in the earth’s orbit that pushed the planet slighty further away from the sun and culminated in a period of mini ice ages during the 17th, 18th and 19th centuries , but that for the past 100 years there has been a substantial increase in temperature.