Important Notice: Our web hosting provider recently started charging us for additional visits, which was unexpected. In response, we're seeking donations. Depending on the situation, we may explore different monetization options for our Community and Expert Contributors. It's crucial to provide more returns for their expertise and offer more Expert Validated Answers or AI Validated Answers. Learn more about our hosting issue here.
Geological evidence suggests that the earth endured several severe ice ages early in its history. The longest and most severe was between 2.3 and 2.4 billion years ago, and lasted around 70 million years. During this period, the entire earth was probably covered in ice, to depth of around 0.6 miles.
