Climate Change
According to this report in Sci-Tech Today, "An in-depth study using aerial photographs spanning the past half century of all 244 marine glaciers on the west side of the Antarctic finger-like peninsula pointing up to South America found that 87 percent of them were in retreat -- and the speed was rising. " Now, we don't know if this kind of climate change represents a normal cyclical pattern or a major change, we do know that a lot of people are very worried about global climate change, and recommend the subject for your study of Luke 21:26.