神秘的黑鼻鲨是一种迷人的物种，让研究人员和海洋爱好者着迷。它独特光滑的身体、引人注目的颜色图案和大背鳍使它在深蓝色海洋中的其他顶级捕食者中脱颖而出。这种特殊的鲨鱼在进化树中的地位象征着全世界为保护多样化海洋生物所做的努力。多年来 ...

Modern life makes us tired, right? But research from societies in Africa and South America suggests people in the ancient world slept only 6.5 hours a night.

Modern life makes us tired, right? But research from societies in Africa and South America suggests people in the ancient world slept only 6.5 hours a night.