It's easy enough to ignore—or even deny—climate change when its effects don't impact your daily life. That superstorm? Must have been a fluke. The big drought? Things like that just happen every so often. So if statistics and admonishments from scientists don't do it for you, maybe these startling before and after photos from NASA will.
The Images of Change iPad app features the best before-and-after images from NASA’s Global Climate Change website—that is, the best images that show the dramatic impacts wrought by climate change. You can watch Alaska's Northwestern Glacier melt, look on as Colorado's High Park Fire chars the landscape, and see how Kilimanjaro's snowpack declines over seven short years.
If this doesn't convince you that there's a problem, maybe nothing will.