Aerial view of flooded streets at the Sarandi neighbourhood in Porto Alegre, Rio Grande do Sul state, Brazil, on May 5, 2024. The challenge is titanic and against the clock: Authorities and neighbours are trying to avoid an even greater tragedy than the one already experienced in the Brazilian state of Rio Grande do Sul, where 66 people died, and 80,000 were displaced by the floods, according to the authorities. Image: Carlos Fabal / AFP