Arctic Ice Loss - why we should care

This summer's heatwave has, unsurprisingly, enlivened the whole debate around Global Warming and Climate Change. But while the mainstream media and most people's interest comes and goes depending on what's directly in front of our eyes, the earth's ecosystems are constantly and relentlessly shifting as a result of the carbon that the human species spews out every year. One of the most influential and potentially catastrophic of these systems is the sea ice covering the Arctic Ocean. This week we look at why, and what will happen when it's gone.