Protesters in Miami in opposition to Carnival Corp. New rules to reduce the amount of pollution in the ocean are set to be put into effect on Jan. 1. Lynn Sladky / The Associated Press
Skift Take: This week in tourism, the cruise industry faces a new rule to cut sulfur emissions by 85 percent that is set to launch in January. But will it be enforceable? Meanwhile, Airbnb’s latest investment suggests the company will become more mainstream over time.