Public concerns nowadays often require familiarity with geophysics and astronomy. Many people wonder or worry about climate change, the greenhouse effect, nuclear energy, and energy in general, as well as space research, solar eruptions, magnetic fields inside and outside Earth, and space radiation. How can these people, including students and teachers, find out about such subjects?
Many turn to Wikipedia™. It can be quite useful, but this is an encyclopedia—often going into excessive detail, occasionally misleading (anyone can modify it), and rarely placing subjects in the broader context in which they belong. Just look up some of the subjects listed above! The general public, as well as students learning about Earth and space science, seek guidance, not just descriptions of subjects but also help in understanding them and placing them in an overall pattern.