I travel all around the world but always stay in the corner. What am I?

What Adam and Eve do not have but the rest of the people have?

Birbal was jester, counsellor, and fool to the great Moghul emperor, Akbar.
The villagers loved to talk of Birbal's wisdom and cleverness,
and the emperor loved to try to outsmart him.
One day Akbar (emperor) drew a line across the floor.
"Birbal," he ordered, "you must make this line shorter, but you cannot erase any bit of it."
Everyone present thought the emperor had finally outsmarted Birbal.
It was clearly an impossible task.
Yet within moments the emperor and everyone else present had to agree that Birbal had made the line shorter without erasing any of it.
How could this be?

What is the coolest letter in the alphabet?

Can anyone tell me a word in the English dictionary which has a silent 'z'?

Who can jump higher than a Mountain?

I am soft and cuddly that soothe your heart. But, If you pick my last name I am going to tear you all apart. Who am I?

You board a train. The train will have to enter a tunnel soon. You are claustrophobic. Which place is the best for you to sit?

Always in you, Sometimes on you;

If I surround you, I can kill you.

What am I?

Who is that with a neck and no head, two arms and no hands? What is it?