What could possibly be the cause of losing ice in the Arctic or rising sea level? Yep, you guessed right. Global Warming!

What is Global Warming? Global Warming is a gradual increase in the overall temperature of the earth's atmosphere generally attributed to the greenhouse effect caused by increased levels of carbon dioxide, chlorofluorocarbons, and other pollutants.

With thick ice gone, Arctic sea ice changes more slowly. The Arctic Ocean's sea ice blanket has already lost most of its old ice and two-thirds of its thickness. The younger ice is thinning more slowly and variably.