Are borders established because of differences or are differences the result of borders? The author ponders on this question.
Through several maps, the text shows COVID-19's cartography and analyses the environmental factors that may have contributed to its spread.
The concept of «blood and soil» as a historical determinant could be found in Termer’s work ten years before the Nazis used it as their state’s official ideology.
JORGE OLCINA answers: Clouds are formed by condensation of air vapour in the atmosphere. Despite their simple, smooth and generally graceful appearance and their varied shapes as suspended bodies in the air, the process of cloud formation is a very complex and largely unknown physical and
One of the most fascinating archaeological evidence of ancient use of Mediterranean mountains are snow pits, also called snow storehouses or snowdrifts. Snow pits have become a clear evidence of much colder times.