Posted on November 22, 2022 (Updated on July 9, 2025)
Landslide disaster
Natural EnvironmentsTerrible devastation was caused by a landslide in the Schwyz district on 2 September. Late in the afternoon, after heavy rainfall, a rocky peak of the Rossberg broke off. The earth masses underneath started to slide and buried the villages of Goldau and Röthen as well as parts of Lauerz and Buosingen within a few
Posted on November 22, 2022 (Updated on July 9, 2025)
Alarm in the Alps
Natural EnvironmentsIt is the mightiest of all Alpine glaciers: the Aletsch Glacier in the Bernese Alps is over 23 kilometres long. Its ice cover is up to 900 metres thick. For now! Because the white splendour of the glaciers could soon be history. For decades, researchers have been observing that the ice masses are shrinking. On
Posted on November 16, 2022 (Updated on July 9, 2025)
The Canadian Shield
Natural EnvironmentsThe Canadian Shield refers to the exposed part of the continental crust underlying most of North America. This crust, the “North American craton”, extends from northern Mexico to Greenland and is composed of hard rocks that are at least a billion years old. The rocks of the North American Craton, with the exception of those
Posted on October 3, 2022 (Updated on July 9, 2025)
How eluvial process determines the difference in colour of soil layers
Natural EnvironmentsAsked by: Willie Russell Which soil horizon is dominated by eluvial processes? The E horizon, the zone of greatest eluviation, is very leached of clay, chemicals, and organic matter. Because the chemicals that color soil have been leached out, the E layer is very light in color. It usually occurs in sandy forest soils in
Posted on October 3, 2022 (Updated on July 9, 2025)
Why is reverse osmosis desalination the dominant method used and not heat-based methods? Also why is brine being dumped back into the ocean?
Natural EnvironmentsAsked by: Michael Tpc Why must reverse osmosis be used to desalinate ocean water? Reverse osmosis is not only the most advanced desalination system in the world today, it is the most efficient and beneficial for the planet: it generates up to four-and-a half-times fewer greenhouse gas emissions than all other technologies, it doesn’t harm
Posted on September 29, 2022 (Updated on July 9, 2025)
How to Distribute Soil moisture output of Thornthwaite and Mather (1954) Soil Water Balance Model into different layers?
Natural EnvironmentsAsked by: Samantha Carlson How do you measure soil water balance? Which soil water balance estimation would you employ to calculate the soil water change [balance] in the field? Change in Soil Water = Inputs of Water – Losses of Water. Change in Soil water = (P + I + C) – (ET + D