or log in
A glacier is a large body of ice in constant, slow motion down a hillside.
Physical properties, as well as the flora and fauna of the ocean change with depth.
In summer, monsoon winds bring heavy rainfall from the sea to the mainland.
This animation demonstrates different types of volcanic eruptions
Did you know that about 75% of the land on our planet is covered with sedimentary rock?
One third of the continents is covered with desert. Today, desertification is a growing problem.
When the temperature of the cooling air reaches dew point condensation occurs because air is...
Short-lived but extremely powerful tornadoes can cause a great deal of damage.