Last week, a series of flash floods and mudslides struck the Serrana mountain region near Rio DE Janeiro, Brazil, destroying buildings roads and more.

上周，一系列的骤发洪水和泥流在巴西里约热内卢附近的塞拉纳山地区爆发，建筑、道路等被破坏。

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Rio de Janeiro, Brazil: People take an evening dip in Ipanema on the summer's hottest day so far, with temperatures at 41 degrees celsius

里约热内卢，巴西：摄氏41度的高温，至今为止夏季最热的一天，人们享受伊帕内玛海滩的清凉晚浴 摄影: Marcelo Sayao/美国环保署

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Top: Rio DE Janeiro — Residents try to cross the flooded streets in Rio DE Janeiro, Brazil, on Jan. 12, 2011.

顶图：里约热内卢——2011,1月12日，巴西，里约热内卢，居民们试图穿过被洪水淹没的街道。

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Swan set out to change that. Invited to speak to world leaders at the first Earth Summit in Rio de Janeiro,Brazil, in 1992 he outlined a plan.

VOA: standard.2009.12.10

Brazil's Rio de Janeiro has already signaled its willingness to host an Electric Grand Prix in 2014.

CNN: Electric cars: Future of auto racing?

In Brazil the forested mountains behind Rio de Janeiro received a third more rain in just 24 hours than in the whole of last January.

ECONOMIST: Torrential rain prompts tragedy, and a need for prevention

Brazil: Extreme violence in Rio de Janeiro.

CENTERFORSECURITYPOLICY: Gangs and violence in Central America