What happened when the wheel was invented?

Is the statement valid that it does not matter how much older a sibling is, eventually the younger one will be half as old as the older one?

Client Dempsey living in one of the East Coast states of the U.S. was talking to Landon Donovan, who was living in the West Coast state of the U.S.

Dempsey: What time is it?
Donovan: Wow, It is the same time here.

How is this possible?

You are on a Boat in the mid of a river. You have two cigarettes with you. One of these two you have to light, how will you light the cigarette?

What can jump higher than a building?

What are the next two letters in the following series and why?
W A T N T L I T F S _ _

*Hint: Check Puzzle Title

Who has married many women but was never married?

A girl rode into a tourist spot out of the city on Thursday. She loved the place and decided to stay for a few days. She stayed for four days and then she left for back home on Thursday.

How can this be possible?

Find the Next Number in the Sequence

2 9 3 1 8 4 3 6 5 7 ?

It has a long neck, A name of a bird, Feeds on cargo of ships, It's not alive,

What is it?