A combination picture shows Rio de Janeiro's Sambadrome, empty in 2021 (top) after Carnival celebrations were cancelled due to the coronavirus disease (COVID-19) pandemic; and bustling in 2019 (bottom) with performing revellers, in Rio de Janeiro, Brazil. Pictures taken February 12, 2021 (top) and March 5, 2019 (bottom). REUTERS/Ricardo Moraes (top)/Pilar Olivares (bottom)