The cave art and skulls found by archaeologists most likely indicated a treatment known as Trephination. This is the process of surgical procedure used by ancient civilizations where a hole was either drilled or scraped into the skull by using very simple and basic surgical tools, in order to either treat mental illness or release blood buildup caused by an accident.
Babur (1483-1530) was a conqueror and warrior and he founded the Mughal Empire in India. Babur was a descendant from the famous Turkic conqueror Timur The Lame. On his mother´s side, his family line descended from Gengis Khan. His first conquests as emir of Ferghana were made in Central Asia, including Samarkand in today´s Uzbekistan, but he lost them because of power intrigues and betrayals. However, his great chance came in India, where he coveted the Delhi Sultanate. He defeated the army of sultan Ibrahim Lodi and took his throne in 1526. This is the beginning of the Mughal Empire.
Net Energy Gain is a concept used in energy economics that refers to the difference between the energy expended to harvest an energy source and the amount of energy gained from that harvest
