Things that normally happen in geologic time are happening during the span of human lifetime.Most glaciers are found in places that get a lot of snow in the winter and stay cool during the summer such as high mountain ranges.Glaciers shrink during the warmth of summer and as long if the  ice melts it is replaced by snowfall during the winter Ice shelves are thinning and breaking up ice shelves is part of a ice sheet that spreads from the coast and floats atop ocean waters.Antarctica has collapse into the sea,a shelf about the size of rhode island in 2002.Studies show that in Greenland the speed of ice loss has double in the past decade.

Penguins helped and hurt by changing climate during the past few decades as climate patterns in parts of Antarctica have changed badly.Adelies penguins are doing better than others these penguins are being helped by climate change.Most type of penguins go fishing only in open water which means they're competing with each other to find food.Adelies the only penguins that catch their fish by diving deep under the ice. So when there's ice over the sea they hardly have any competition and they can get all the food they want.