People Shaping The Land: Polders

  Geography Is Dynamic. Remember it, and remember it often. Things on the earth are changing all of the time. Many of those things are natural. Many things change because of human beings. One example is polders. What is a polder? Land which has been reclaimed from a body of water. That is the short…

Railroads and Geology

If you go to some railroad tracks, look at the rocks. Many do not understand that there is a connection here between geology and railroads. Here is a lesson in geotechnics. In a nutshell, the layer of rocks, known as track ballast, is like a foundation for the tracks, stopper of flooding, inhibitor of weeds….