When he was last there in June, the snow had disappeared from the hill, and there were no icebergs in the water. It was 28 degrees centigrade, the hottest he has ever known.
Previously, the drinking water that used to supply Alluitsoq, the small village where he was brought up, ran out. The mountain lakes from which it flowed had evaporated in the heat.
His country is changing so fast that he fears for its future, and he has no doubts what is to blame. “We’re spewing too much carbon dioxide into the air and drilling for more oil makes it worse,” he says.
“To paraphrase an old native American saying: only when the last tree has died, the last river been poisoned, and the last fish been caught, will we realise that we cannot eat money.”