The giant panda is the great international symbol of wildlife conservation and it’s no longer considered to be endangered. The great apes, however, are plummeting toward extinction. The International Union for the Conservation of Nature keeps a Red List of Threatened Species. But what does that mean exactly? In this hour for next years Earth Day we break it down with stunning HD footage, maps, stats and the latest low-down on where and how our favourite animals are right now in 2017.