1. Homeland Security Secretary Janet Napolitano has told a Senate panel that the Secret Service prostitution scandal in Colombia did not put President Barack Obama's security at risk. She added the agents' alleged behavior though is "inexcusable".
2. Newt Gingrich appears ready to step aside - this a day after Mitt Romney swept five more primaries. A Gingrich spokesman says he's planning to throw his support behind the former Massachusetts governor.
3. Officials are working to find out more about a California dairy cow that was found to have mad cow disease. They're telling worried consumers that the food supply is safe. It's the first new case of mad cow in the US since 2006.
4. And it has been nearly five years since Madeleine McCann vanished in Portugal. British police released a new image of what she would look like today. They're hoping to reopen the case, saying she could still be alive.
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