World News from the BBC
There have been violent protests in Haiti against United Nations peacekeepers, who have been blamed for a cholera epidemic that's killed more than 900 people. UN troops fired tear gas to disperse demonstrators throwing stones and blocking roads in Cap Haitien, Haiti's second city. Some Haitians have accused peacekeepers from Nepal of introducing cholera to Haiti for the first time in a century. The UN says no evidence has been found to justify the accusation, but the cholera strain has been matched to one from South Asia.
The US government says that almost 17.5 million American households had trouble feeding themselves adequately last year because of their financial difficulties. The Department of Agriculture said the number had not risen from 2008, despite a sharp increase in unemployment, and many families would have faced far more severe problems without help from the federal government.
The social networking site Facebook has launched a new messaging service that seeks to incorporate and surpass email. The founder of Facebook, Mark Zuckerberg, said he did not see email as a modern messaging system, but he stressed that he didn't envisage people abandoning it straight away.
"We don't expect anyone to wake up tomorrow and say 'OK, I'm going to shut down my Yahoo mail account or my Gmail account and switch exclusively to Facebook.' That's not what we think is happening in the world. What we think is happening is that just like those high school students who have started off today talking about, have subtly shifted towards more and more real-time, simpler communication. That's what we think is going to happen here too."