Protesters Oppose Zipline on Rio's Sugarloaf Mountain.

Residents and environmental activists in Rio de Janeiro are protesting the construction of four ziplines on Sugarloaf Mountain, a UNESCO World Heritage Site. The ziplines, which will run over the forest between Sugarloaf and Urca Hill, are aimed at boosting tourism but have been met with opposition due to concerns about noise pollution and potential damage to the environment. The company behind the project, Parque Bondinho Pao de Açúcar, says it has obtained all necessary authorizations and licenses and that sound tests indicate noise from riders will not be perceptible from below.