During World War I, the government nationalized telephone and telegraph lines in the United States from June 1918 to July 1919, when, after a joint resolution of Congress, President Wilson issued an order putting them under the direction of the U.S. Post Office.
Quick Answer. Some of the things that cause temperatures change on Earth include the greenhouse effect, the amount of heat from the sun reaching Earth, deforestation and changes in Earth's surface with regards to reflectivity. Temperature change on Earth has become a major topic of debate in recent years because of its negative effects.
There are a few reasons why seasonal dates can vary from year to year. 1  A year is not an even number of days and neither are the seasons. 2  Another reason is that the Earth's elliptical orbit is changing its orientation relative to the Sun (it skews), which causes the Earth's axis to constantly point in a different direction, called precession.