other events include concerts, parades, presentations, and gatherings in lapa and santa teresa - on this day students promote awareness by planting flowers around rio and  on this day the united nations' billion tree campaign receives much attention in the local media.

rio de janeiro's official tree is the jequitibá-açu (Cariniana ianerensis), selected through a vote and one of the most important and endangered trees of the atlantic rainforest (mata atlântica) and typically carioca.

october 12th is celebrated as the anniversary of the statue of christ the redeemer, now symbol of the city of rio de janeiro.