Western Mail: AN EXPEDITION led by a Welsh scientist is examining whether the Greenland ice sheet is collapsing Data from Dr Alun Hubbard and his team from Aberystwyth University will help study the impact of climate change in the region. Aberystwyth-born Dr Hubbard has already spent three years researching the effects of climate change on Greenland, the land of polar bears, the least densely populated country in the world and the planet`s largest non-continental island. There are …