Pollution is changing how the world smells

Scent is a powerful thing. In people, it's connected to taste, memory, even cognitive health. For wildlife, smell can even dictate survival. But researchers are increasingly concerned about odor pollution, when the chemicals we add to the environment either overwhelm the existing smellscape with their own scent, or they change the existing scents at the molecular level. The World's Host Marco Werman speaks with Stony Brook professor Jordanna Sprayberry about what this could mean for plants, pollinators and ecosystems.