How Would Earth Be Different If Modern Humans Never Existed?无现代人的地球会有何不同？
Humanity’s fingerprint can be seen across the planet today， from the towering skyscrapers that define our modern metropolises1 to the pyramids and other ancient monuments of our past. Human activity also marks our sprawling open fields of agriculture and the roads that link everything together. But what would the world look like if humans had never existed？
如今，人类的印记遍布全球，从定义我们现代大都市的高耸摩天大楼，到金字塔和其他古代遗迹。（剩余9509字）
