Short clean riddles

It is greater than god, more evil than the devil, the poor have it, the rich need it, and if you eat it, you will die? What is it?

Red through and through, it has no mouth. But it eats many things; it fears water but not wind.

Alive without breath, As cold as death; Never thirsty, ever drinking, All in mail never clinking.

Large as a mountain, small as a pea, Endlessly swimming in a waterless sea.

Every time you stand up, you lose this. What is it?

I'm very, very big. I like to eat peanuts and hay. I have four legs and two big ears. My long nose is called a trunk. I am an...

It is impossible to keep it until you give it someone else. What is that?

Which month has 30 days?

I build up castles. I tear down mountains. I make some men blind, I help others to see. What am I?

Something very extraordinary happened on the 6th of May, 1978 at thirty-four minutes past twelve a.m. What was it?