Guest: Ben Smith, Politico.com

Tragedies like Hurricane Katrina, the Asian tsunami and the Sept. 11 attacks prompted billions of dollars in donations. But following an earthquake in Pakistan that killed 80,000... not so much. How much do Americans give to charitable causes? And why? Stephen Dubner, author of "Freakonomics," has numbers and answers. More: Dubner's Freakonomics blog

Even Barack Obama conceded it would be tough to win West Virginia.. And last night, he was more than right. Hillary Clinton took the state with a more than 40 percent lead. Clinton's near-constant presence throughout the state stood in contrast to Obama’s quick-hit, half-day Monday visit. Emily Corio is a reporter for West Virginia Public Broadcasting. She was with the Clinton campaign last night

For the first time in almost 50 years, West Virginia matters. The polls already foretell West Virginia primary’s likely outcome — a victory for Hillary Clinton — but the Democratic nomination race continues to energize young voters across the state.

The battle over global warming is being fought over a large white mammal — the polar bear. The polar bear's habitat is melting away and a collection of environmental groups including Greenpeace and the Center for Biological Diversity have come together to pressure the government to list polar bears as an endangered species.

The fight over voter identification requirements has heated up after the Supreme Court upheld Indiana's voter ID law. Nineteen states are considering new voter ID measures, but we focus on Missouri, which The New York Times' Ian Urbina tells us is the only proposal that could become law in time for November’s presidential election.

The theme of Sunday's talk shows: Hillary is toast. But then again, anything could happen...

Polls suggest voters in West Virginia are leaning toward Hillary Clinton. In the run-up to the state's May 13 primary, Clinton made a return trip to the state, and Obama is scheduled to visit soon too. Anna Sale updates The Takeaway. She's been reporting on the primary for West Virginia Public Broadcasting.