Those who visit Google.com today will be reminded that it is Issac Newton’s birthday today. Issac Newton came up with the theory of gravitation and the story behind it. In short, the story was that Newton was sitting by or under an apple tree, when an apple fell from the tree. That is what sparked him to think of the force of gravity and come up with the theory of gravitation.
Here is a video I posted on the apple falling off the Google logo: