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 ...

2023年8月18日，在湛江市雷州半岛东海岸，我们在出海调查时发现了一头奇怪的中华白海豚。 它长时间地停留在海面上，似乎没有任何入水的意思。这很反常，海豚用肺呼吸，需要重复入水、出水才能完成换气，中华白海豚通常完整换气后会潜水3-5分钟。