Can you explain who the Kock Brothers are? and Also what is NUns on

The Koch brothers are billionaires who are giving a lot of money to the Republican party.

http://abcnews.go.com/blogs/politics/2012/07/meet-the-koch-brothers-again/

Nuns on the bus is a group of Catholic sisters who are touring the country to fight budget cuts and support the poor.

http://religion.blogs.cnn.com/2012/06/26/nuns-on-the-bus-rolling-through-middle-america/

Thanks for the help

You're welcome.

Can you explain who the Kock Brothers are? and Also what is NUns on the bus?