In June 30, 1908, an event that has since been called the largest meteor impact event in recorded history happened near the Podkamennaya Tunguska River in Russia. A large explosion ripped through the skies and unleashed destruction that is said to have produced more than a 150 times energy than the Hiroshima bomb did.
The effect was that it destroyed over 2,000 km² of the forest surrounding the area and flattened over 70 million trees. People in the nearest town about 40 miles away felt the blast with some even being thrown into the air.
Slater divided factory work into such simple steps that children aged four to ten could do it -- and did. ... Samuel Slater has been called the "father of the American factory system. ... a genius whose other advances included using water power to drive his machines and dividing labor among ... America's Industrial Revolution
A little girl notices that, whenever both of her parents are in the car, her father is always driving. She deduces that women should be passive and men should be active. This process is called social learning.
Mobile phones have become part of our daily lives and besides communication, we have available a vast variety of apps that can make our daily life a lot easier
