Every week, we borrow some terms from the financial world and ask two people to go “long” and “short” — that is bet on or against — topics in the week’s news. 

This week, Marketplace’s Andy Uhler and Newsweek’s Zoë Schlanger chat with guest host David Lazarus and go long and short on space travel, Paris, solar power, and Olympic sewage. 

To listen to the full interview, tune in using the audio player above.