Ida Tarbell found it difficult to live in Paris without much money.

VOA: special.2010.04.25

But others are much more difficult to restart.

VOA: special.2010.04.20

"And since it is so much more expensive and so much more difficult to cure, that would be a catastrophe."

VOA: standard.2009.12.09

Because the tunnel economy is clandestine, it's difficult to estimate just how much money is being made.

VOA: standard.2010.06.17

But by continuously linking this in a public way and in taking a firm position on it, they make it much more difficult for him to move away from sites in Poland and the Czech Republic,".

VOA: standard.2009.07.15

A newly released history of 20th Century Russia, written by a team of 45 scholars and edited by historian Andrei Zubov, includes a statement that much of the country's recent past is painfully difficult to study, which is why many refuse to do so.

VOA: standard.2009.12.25

She says it's no easy feat. "You have to kind of deliver so much of the story through your own written texts so it's difficult in that way because you have to get a character and a point across in 140 characters or less."

VOA: standard.2010.05.07