In the Autumn season, the duration of daylight becomes shorter. Thus, the temperature starts to drop from the summer, and the temperature considerably cools.

Autumn is defined by the orbit of the Earth around the sun. It begins on the equinox, which falls in September.

During the fall, many birds prepare themselves for winter migration. Many birds fly north in the spring to breed in the warmer temperate or Arctic summer and return back in the autumn to warmer regions in the south.

In the 12th and 13th century Middle English, autumn was called 'Haerfest", after the act of taking in crops.

The amount of sugar in leaves is what results in autumn colors.

All four seasons, including Autumn, of course, are caused by Earth's tilt in relation to the sun.

The autumnal equinox has an equal number of hours of daylight and darkness, and it is the first day of autumn.

Autumn is called fall by Americans. Both "Autumn" and "Fall" are used in American and British English, although both originated in Britain.

The transition from summer to winter is marked by Autumn. The Autumn period is between September 1st to November 30.

With the decrease in exposure to light, the trees start to produce a hormone that boosts the growth of a cell between the stem and the leaf, which causes the leaf to fall off.