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It could disappear before 2030.
可能2030年會全部消失。
Some predictions suggest 2015.
有些則預言2015年。
Soon these waters will be free of ice several summer months a year.
很快這些水就會在夏天的幾個月里脫離冰川。
The sunbeams that the ice sheet previously reflected back now penetrate the dark water, heating it up.
本來被大冰原反射的陽光現在直照深海并加熱海水。
The warming process gathers pace.
這加速了暖化過程。
This ice contains the records of our planet.
冰雪包含地球的記錄。
The concentration of carbon dioxide hasn't been so high for several hundred thousand years.
數十萬年來二氧化碳的濃度從未這樣高。
Humanity has never lived in an atmosphere like this.
人類從未生活在這種大氣下。
Is excessive exploitation of our resources threatening the lives of every species?
資源的過度開發正威脅所有品種的生存？
Climate change accentuates the threat.
氣候變化使危機加深。
By 2050, a quarter of the Earth's species could be threatened with extinction.
到2050年 地球上四分之一物種面臨絕種的危險。
In these polar regions, the balance of nature has already been disrupted.
在南北兩極大自然的平衡已瓦解。
Off the coast of Greenland, there are more and more icebergs.
格陵蘭島的沿海冰山越來越多。
