HumansCan you ever know yourself? Whatever the answer, it is worth trying Studying ourselves gets more complex with every breakthrough in genetics, physics or microbiology, but doing so can help us understand others a little better, too. Leader
HumansEarliest known beds are 227,000-year-old piles of grass and ash Grass bedding in South Africa’s Border cave dates back 227,000 years, and was put on top of ash to help keep biting insects away ¿ìè¶ÌÊÓÆµ