Some ways to learn about earth science are to attend a college program that teaches the subject or visit earth science websites, such as the one hosted by the American Geosciences Institute. The top school in the US for Earth Science, as of 2014, is the California Institute of Technology.
Earth science, also called geoscience, encompasses all scientific fields relating to the Earth's planet-wide systems, including oceanography, climatology, ecology and geology. Some systems of the planet include the hydrosphere, biosphere, atmosphere and the lithosphere. Scientists believe that Earth is approximately 4.54 billion years old and formed from the dust cloud left over from the formation of the sun.