Some new research throws into question things we say all the time about the Internet. The research focuses on Twitter, the service that lets many millions of people send short messages to each other from computers or cell phones. It's commonly said that social networking like this is revolutionary, that it's created new communities, even that it's obliterated geography. You can connect with people who share common interests, not just people who happen to live nearby. NPR's Shankar Vedantam is here to explode all that. Hi, Shankar.
This is MORNING EDITION, from NPR News. I'm Renee Montagne.
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And I'm Steve Inskeep. Good morning.
One more Arab nation is changing a longtime leader. Yemen's president for 33 years was Ali Abdullah Saleh. Today, millions of Yemenis vote. And they're being asked to ratify a plan under which Saleh's vice president will replace him. NPR's Kelly McEvers is in Yemen's capital Sana'a.
And, Kelly, where exactly are you in the capital city?
The U.S. economy is improving, even though Americans keep having to look over their shoulders at Europe. The state of the economy affects everything in American politics right now, from the presidential election to the budget that the White House lays out today.
NPR's Cokie Roberts has some analysis, as she does the most Mondays. Cokie, good morning.
COKIE ROBERTS, BYLINE: Hi, Steve.
INSKEEP: OK, so what does the president's budget tell us?