If you want to keep up to date while traveling, using various iPhone apps to do so is simple and, usually, sufficient.  I also use RSS feed readers [mainly Feedler] on my iPhone and iPad, but going to the actual source sometimes is necessary.  For direct news sources, then, I’d suggest:  BBC News, CNN, USAToday, NYTimes and NPR, and the apps such as Flipboard and FLUD which will let you aggregate sources in a visual fashion.