Rik, you are so right! For those who don't know, this summer will be the 1st time in all of human history when there will probably be no Arctic ice cover. Ice reflects 80% of sunlight. Water reflects only 6% and the rest is absorbed to warm the water. Captured in the arctic waters and in the tundra that surround it is something called methane hydrate. It is frozen methane and water. When the water warms the methane is released into the atmosphere. Methane is 86 times more dangerous to the atmosphere than CO2 is and it lasts much longer. There are hundreds if not thousands of giga-tons of methane in the arctic.A release of just 50 giga-tons could start a chain of events including rapid warming in the Northern Hemisphere, rapid melting of the Greenland ice cover and sea-level rise that would wipe out coastal cities around the world. 
Some serious professional climate scientists say this could lead to "near term human extinction." Yes, EXTINCTION of all life on Earth. WAKE UP!