What was the Earth covered in 40000 years ago?

Around 40,000 years ago, during the Upper Paleolithic period, much of the Earth was covered in vast ice sheets due to the last Ice Age. This period featured extensive glaciers in regions such as North America, Europe, and Asia, leading to significantly lower sea levels. The climate was generally colder and drier, impacting flora and fauna and influencing human migration patterns. As a result, many areas that are now temperate or tropical were inhospitable and barren.