President Obama is in Nevada today to talk about a new plan to help homeowners. Paul Kiel reports on housing for ProPublica, he'll join us with details. John Ralston covers politics in Nevada and he'll weigh in on how the President is polling in that critical swing state. Marine biologist Pat Krug stops by to talk about a lionfish invasion and NPR's Steve Inskeep is in studio with his new book, Instant City.