Earthquakes are caused by the sudden release of energy through the earth’s crust, which creates seismic waves. The disruption caused by these waves creates the shaking that most people associate with earthquakes. The US Geological Survey (USGS) estimates there are ~500,000 seismic events every year. Most of them are too… Read more“Map Monday, Earthquakes, Causes, Facts, & Predictions”
Map Monday, How do we Define Europe and who are the Europeans?
Europe, what exactly is it, and who’s a European? The short answer, it’s a continent comprising the northwestern portion of the Eurasian landmass. Many of Europe’s generally accepted boundaries include large bodies of water. To the north and west, the Atlantic and Arctic oceans mark the edge of Europe. The… Read more“Map Monday, How do we Define Europe and who are the Europeans?”
Map Monday, Gregorian Calendar Creation and Adoption
Discrepancies between the Julian calendar and the length of a year led to the development and adoption of the Gregorian calendar. The Julian calendar is based on 365.25 days in a year. As such it adds an extra ‘leap’ day every four years. Unfortunately, the year is slightly shorter at… Read more“Map Monday, Gregorian Calendar Creation and Adoption”