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From fossil evidence, it appears that life may have existed on Earth as early as 3.5 billion years ago. This suggests that life must have evolved sometime during Earth's tumultuous first billion years.
  A:The first modern humans (Homo sapiens sapiens) appeared on earth around more than one hundred thousand years ago. They began to replace Neanderthal man (Homo sapiens neanderthalis or, more recently, Homo neanderthalis) in Europe around 50,000 years ago.ho they were and what they did represents a large field of study, pursued by Archaeologists, Anthropologists and Evolutionary Biologists. 1  According to Quran, Adam & Hawa were the first humans born on earth. 2  According to the Bible (Genesis Chapter 4), the first born person on earth was Cain, the child of Adam and Eve.