The existence of Helen of Troy is still a debate. Let me explain. While the Trojan war, most likely existed and Agamemnon, Menelaus, Odysseus, and Priam probably existed, the existence of Helen of Troy is questionable. There is no archeological or documented evidence of her existence, and she is rather a legend. Trojan war existed but it was due to political and economic reasons.
Did you know that Sikhism is the fifth major religion? Sikh Religion has 25 million followers mainly in Pakistan and India in the area named Punjab. They have large community in US and Canada.
8000 BC Shamans are first using trepanation with success. Some patients did not even survive but they came back for more. The reasons trepanations were performed in Neolithic are unknown.
Your brain is 75% water. A dehydration of 2% can affect your brain.
Your brain has a weight of 1300 – 1400 g of which 60% is fat, making the brain the fattest organ. 25% of your cholesterol is in your brain. Without enough cholesterol your brain cells may suffer.
The humans use 75 percent less energy walking upright than the chimps use walking on all fours. Walking upright seemed to be beneficial because it saved energy.
Having two limbs free to use tools constituted a key element of advanced intelligence.
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