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One third of the continents is covered with desert. Today, desertification is a growing problem.
Tsunami waves are very high waves of immense destructive power.
This animation demonstrates different types of volcanic eruptions
The diameter of our galaxy is about 100,000 light years; it contains more than 100...
A periodic climate pattern that occurs across the tropical Pacific Ocean every five years.
Waves play an important role in forming the coast.
Water covers about 71% of the Earth’s surface. But why are there two types of water on Earth,...
In the past, a number of geologists tried to explain why the outlines of continents seem to fit...