RIDDLE OF THE DAY - DAILY RIDDLE

Riddle: I am the ruler of shovels, I have a double. I am as thin as a knife, I have a wife. What am I?

Riddle: You can see nothing else When you look in my face, I will look you in the eye and I will never lie. What am I?

Riddle: This old one runs forever but never moves at all. It has not lungs nor throat, but still a mighty roaring call. What is it?

Riddle: What question can someone ask all day long, always get completely different answers, and yet all the answers could be correct?

Riddle: You can carry it everywhere you go, and it does not get heavy. What is it?

Riddle: I am a path situated between high natural masses. Remove my first letter and you have a path situated between man-made masses. What am I?

Riddle: It is bigger than a grey elephant yet weighs nothing. What is it?

Riddle: You can see me in water, but I never get wet. What am I?

Riddle: A little pool with two layers of wall around it. One white and soft and the other dark and hard, amidst a light brown grassy lawn with an outline of green grass. What am I?

Riddle: A father and son were in a car accident where the father was killed. The ambulance brought the son to the hospital. He needed immediate surgery. In the operating room, a doctor came in and looked at the little boy and said I can't operate on him he is my son. Who is the doctor?