Seeing is believing
Arctic sea ice has now surpassed all previous records for the lowest absolute minimum extent. Satellite measurements recorded the previous...
On August 16, 2007 the Arctic ice cap reached its lowest dimensions since satellite photography began in 1970.
The peak summer ice loss usually occurs in September so there's an entire month yet to go.
Ice reflects 80% of the sunlight and heat back into space; open ocean reflects only 10%--so the warming is accelerating.
Previous models called for a complete melt of the icecap in 2070. That has been advanced to 2030.
Here is a link that might be useful: National Snow and Ice