Logic Riddles

Question: A man named Edward was born on December 21st, yet his birthday is during the summer this year.

How could this be?

Question: There are 100 coins scattered in a dark room. 90 have heads facing up and 10 are facing tails up. You cannot tell which coins are which. How do you sort the coins into two piles that contain the same number of tails up coins?

Question: An apple tree has apples on it. A storm comes through and there is no longer apples on the tree. But there isn't apples on the ground either.

How can this be so?

Question: When the day after tomorrow is yesterday, today will be as far from Wednesday as today was from Wednesday when the day before yesterday was tomorrow. What is tomorrow?

Question: I'm teary-eyed but never cry.
Silver-tongued, but never lie.
Double-winged, but never fly.
Air-cooled, but never dry.

What am I?