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Monte Del Sol Charter School seventh grader Ahmed Maaz hooks up the water turbine on his team’s entry in the Future City Competition on Thursday at the school. Maaz and two classmates worked during the lunch hour on their creation, Beleza do Rio (the city of a billion trees), which won the middle-school STEM challenge designed to create solutions for climate change.

By the time it hosts the United Nations conference on climate change in 2098, the Brazilian city of Beleza do Rio will be a climate-friendly paradise.

Roving carbon capture robots will scale the city’s terraces, which were designed to facilitate farming and limit flooding from a nearby river. Geothermal and hydroelectric power plants, combined with public magnet levitation trains and rentable bicycles, will eliminate the city’s fossil fuel use. Arboretums across the city host a billion trees and enough vertical farming structures to supply residents with fresh produce.

The city has been rated “the most planet-friendly and diverse city in South America,” tourism materials tout.

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Monte Del Sol Charter School seventh graders, from left, Weslee Nixon, Isaac Aragon and Ahmed Maaz designed a fictional futuristic Brazilian city for the Future City competition. 

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Monte Del Sol Charter School seventh grader Ahmed Maaz points out the proposed location of his team's entry in the Future City Competition on Thursday during lunch time at the school.