Modern life makes us tired, right? But research from societies in Africa and South America suggests people in the ancient ...

Modern life makes us tired, right? But research from societies in Africa and South America suggests people in the ancient ...

尽管有保护雪豹的法律，但世界自然基金会（WWF）表示，每年仍有221至450只雪豹被杀，这导致过去二十年来全球雪豹数量减少了20%。 科学家目前估计野外仅剩下4,000至6,000只雪豹，其中约300只在巴基斯坦，是世界上第三大雪豹族群。

These immersive reading experiences are part of a rising trend in China, where deep reading -- once confined to libraries and lecture halls -- is being reshaped by digital innovation. According to ...