Today's edition of quick hits:
* A terrible crash: "The driver of the train that crashed in Spain, killing at least 80 people including one American, was detained and put under formal investigation Thursday after security video showed the train derailed after speeding around a tight curve. Excessive speed has been identified as the likely main cause of the accident, official sources told Reuters as hospitals treated dozens of injured passengers, including at least five Americans."
* Infrastructure, infrastructure, infrastructure: "President Barack Obama used the Port of Jacksonville as a backdrop for his latest economic policy speech, using an infrastructure project there to illustrate his call for greater investment in similar projects."
* Student loans: "After a series of delays, the Senate passed legislation Wednesday to fundamentally restructure government student loans and reverse the sharp hikes in interest rates that went into effect on July 1. The vote was 81-18, with more than a dozen Democrats voting against the White House-backed plan. The compromise proposal, which would link interest rates to market prices, was vehemently opposed by liberal Democrats who maintain that its provisions are unfair."
* Hmm: "A private spokesperson for Virginia Gov. Bob McDonnell (R) on Thursday refused to discuss the terms under which a Virginia businessman gave $120,000 in loans to the governor and his family."
* Smart move: "San Diego Mayor Bob Filner (D-Calif.) has been disinvited from being the keynote speaker at an event on military sexual assault, after three women came forward this week and accused him of sexual harassment. Filner was scheduled to speak at an Aug. 30 charity event for the National Women Veterans Association of America."
* In related news: "Nancy Pelosi (D-Calif.) on Thursday denounced Anthony Weiner (D-N.Y.) and Bob Filner (D-Calif.), two of her former House colleagues who are now embroiled in sex scandals, for behavior she calls 'reprehensible.'"
* Florida's most high-profile Democrat: "Sen. Bill Nelson (D-FL) said Thursday that Florida's 'Stand Your Ground' law, made famous by the death of Trayvon Martin, leads to more violence and should be changed."
* Neil Irwin asks a question with underappreciated significance: "Yellen vs. Summers: Who would be a better Fed chair?"
* And Krugman is on board with the assertion that economic ideas don't have to be "new" to be good.
Anything to add? Consider this an open thread.