Difficult simple riddles with simple answers

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

What is as light as a feather but impossible to hold for several minutes?

Re-arrange the letters, O O U S W T D N E J R to spell just one word.

What does man love more than life, Fear more than death or mortal strife. What the poor have, the rich require, and what contented men desire. What the miser spends and the spendthrift saves, And all men carry to their graves?

What word looks the same backwards and upside down?

What stays where it is when it goes off?

I know a number which is spelled in an alphabetical order. Do you?

Create a number using only the digits 4,4,3,3,2,2,1 and 1. So I can only be eight digits. You have to make sure the ones are separated by one digit, the twos are separated by two digits the threes are separated with three digits and the fours are separated by four digits.

Die without me, Never thank me. Walk right through me, Never feel me. Always watching, Never speaking. Always lurking, Never seen.

What does the following represent? N N N N N N N A A A A A A A C C C C C C C