Permafrost – What is it and Why is it important?

What is permafrost? Permafrost is any soil or rock that has been frozen beneath the ground for at least two consecutive years. Ground ice does...
Hydroelectric power – Pros and Cons

Hydroelectric power – Pros and Cons

Since the late 19th century when hydropower was first introduced as a source for generating electricity, it has become popular in 150...