In this Jan. 6, 2020 photo, activist Ale Roque smiles as she sees a tree bearing fruit at her home in Rio's first favela, Morro da Providencia, Rio de Janeiro, Brazil. Roque's project forms part of a recent wave of green projects in Rio, a city known for its jungle, but much of which is actually large expanses of concrete and brick with ever-hotter temperatures during the summer months. (AP Photo/Silvia Izquierdo)
In this Jan.10, 2020 photo, Luis Cassiano shows his green roof at his home in Arara Park favela, Rio de Janeiro, Brazil. "I think people will, one day, really wind up joining. We'll need it. Just look at the heat of all those roofs together!" (AP Photo/Renato Spyrro)
In this Jan. 6, 2020 photo, a sign that reads "You take part of nature" at an area where Ale Roque plants different kinds of trees in Rio's first favela Morro da Providencia, Rio de Janeiro, Brazil. Living in Morro da Providencia, Roque is working to restore some greenery to the urban scene. (AP Photo/Silvia Izquierdo)
This Jan.6, 2020 photo, shows an area where trees and plants were gardened by Ale Roque in Rio's first favela Morro da Providencia, Rio de Janeiro, Brazil. Living in Morro da Providencia, Rio de Janeiro's first favela, Roque is working to restore some greenery to the urban scene. (AP Photo/Silvia Izquierdo)
In this Jan. 6, 2020 photo, a young woman smells a plant during a gardening class at Rio's first favela, Morro da Providencia, Rio de Janeiro, Brazil. Rio's dense neighborhoods have among the least vegetation in Brazil; 80 of them have less than 1% tree cover, most in the industrial North Zone. (AP Photo/Silvia Izquierdo)
In this Jan.6, 2020 photo, Ale Roque, left, teaches a boy to garden in Rio's first favela Morro da Providencia, Rio de Janeiro, Brazil. Living in Morro da Providencia, Roque is working to restore some greenery to the urban scene. (AP Photo/Silvia Izquierdo)
In this Jan. 6, 2020 photo, activist Ale Roque smiles as she sees a tree bearing fruit at her home in Rio's first favela, Morro da Providencia, Rio de Janeiro, Brazil. Roque's project forms part of a recent wave of green projects in Rio, a city known for its jungle, but much of which is actually large expanses of concrete and brick with ever-hotter temperatures during the summer months. (AP Photo/Silvia Izquierdo)
In this Jan.10, 2020 photo, Luis Cassiano shows his green roof at his home in Arara Park favela, Rio de Janeiro, Brazil. "I think people will, one day, really wind up joining. We'll need it. Just look at the heat of all those roofs together!" (AP Photo/Renato Spyrro)
In this Jan. 6, 2020 photo, a sign that reads "You take part of nature" at an area where Ale Roque plants different kinds of trees in Rio's first favela Morro da Providencia, Rio de Janeiro, Brazil. Living in Morro da Providencia, Roque is working to restore some greenery to the urban scene. (AP Photo/Silvia Izquierdo)
This Jan.6, 2020 photo, shows an area where trees and plants were gardened by Ale Roque in Rio's first favela Morro da Providencia, Rio de Janeiro, Brazil. Living in Morro da Providencia, Rio de Janeiro's first favela, Roque is working to restore some greenery to the urban scene. (AP Photo/Silvia Izquierdo)
In this Jan. 6, 2020 photo, a young woman smells a plant during a gardening class at Rio's first favela, Morro da Providencia, Rio de Janeiro, Brazil. Rio's dense neighborhoods have among the least vegetation in Brazil; 80 of them have less than 1% tree cover, most in the industrial North Zone. (AP Photo/Silvia Izquierdo)
In this Jan.6, 2020 photo, Ale Roque, left, teaches a boy to garden in Rio's first favela Morro da Providencia, Rio de Janeiro, Brazil. Living in Morro da Providencia, Roque is working to restore some greenery to the urban scene. (AP Photo/Silvia Izquierdo)
In this Jan. 6, 2020 photo, activist Ale Roque smiles as she sees a tree bearing fruit at her home in Rio's first favela, Morro da Providencia, Rio de Janeiro, Brazil. Roque's project forms part of a recent wave of green projects in Rio, a city known for its jungle, but much of which is actually large expanses of concrete and brick with ever-hotter temperatures during the summer months. (AP Photo/Silvia Izquierdo)
How Rio's favela residents are 'greening' their homes – in pictures
Brazilians are working to transform the city's concrete urban jungle
