Americans donate about $300 billion a year to charities, with about 30 percent of that taking place in December. But not all charities are good stewards of donated dollars. For our last podcast of 2014 we’re talking about how to investigate nonprofits and charities. Here’s the lineup:

- Justin Elliott of ProPublica talks about investigating the American Red Cross’ Superstorm Sandy relief efforts.

- Craig Harris of the Arizona Republic explains how he exposed major problems with the nonprofits running the Fiesta Bowl