141. How to Raise Money Without Killing a Kitten

142. The Troubled Cremation of Stevie the Cat

143. Why Bad Environmentalism Is Such an Easy Sell

Freakonomics Goes to College, Part 1 (Rebroadcast)

Freakonomics Goes to College, Part 2 (Rebroadcast)

144. Who Runs the Internet?

145. What Do Skating Rinks, Ultimate Frisbee, and the World Have in Common?

146. Fighting Poverty With Actual Evidence

147. The Most Dangerous Machine

148. Are Gay Men Really Rich?