Human eye anatomy | eye structure and function | Parts of the eye | eye parts and functions

Eye Anatomy and Function - Made Easy

Parts of the eye | Human eye & the colourful world | Khan Academy

Key Differences Between Male and Female Skeletons | Human Skeletal Anatomy

Vote for Human Flight: TikTok Video of the Year Nominee

1. He said that before the industrial era, nobody slept 8 hours in one block. People slept in two parts: they went to bed after sunset, woke up around midnight, stayed awake for 1–2 hours, then went back to sleep. This “split sleep” was normal for thousands of years. But when factories appeared in the 19th century, society forced everyone into one long sleep window — and the body never fully adapted. He said the modern schedule confuses the brain: it doesn’t understand when it should rest and wh

Abilities ONLY Humans Have (No Other Animal Can Do This) 🧑

Sexual #reproduction in human beings |Pregnancy | human reproduction