The Earth is still in an Ice Age, but it’s simply currently in an interglacial period. What establishes in Ice Age is the presence of permanent ice sheets anywhere on Earth. It’s well known that many now frozen regions were once warmer, but during most of Earth’s history, it had no ice sheets. Being in an interglacial period simply means that these ice sheets are now much smaller than they would be in a glacial period, or what’s popularly understood as an Ice Age. Due to our current climate change crisis, it is unknown when the next glacial period will strike as it is largely dependent on if and when we take control of our emissions.