For what purpose are changing left-hand traffic on the roads in the right-hand ?

There is a theory that this has something to do with the left and right hemisphere of the brain, but just can not understand - why and what are the pros right-hand traffic ?

What to look for when buying seedlings of roses ?

Often, buying seedlings roses, flowers to get one god.V the reason that Rose survives poorly, in grades or sellers matter .

Sports Betting.What are the rules for yourself, you have made?

I have a few friends who suffer from sports betting.

Each one for himself invented the rules, such as:

-if daily 3 sink in a row - to stop

Do not give in to emotions

-not to show patriotism

etc.

And what rules you have developed for yourself?