All stars form in nebulae, huge clouds of gas and dust.   Though they shine for thousands of...

Due to activities of human beings, many plants and animals species become endangered or some of...

There is no life without water. Water is not only important for human beings but for the entire...

Introduction: Young people around the world are increasingly taking the lead in the fight against...

The guitar is a stringed musical instrument that is usually fretted and typically has six or...