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Scientists have discovered what they believe to be the cleanest air on Earth. start learning
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Os cientistas descobriram o que acreditam ser o ar mais limpo da Terra.
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Researchers from Colorado State University and the Australian Bureau of Meteorology conducted research on the purity of the air above Antarctica. start learning
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Pesquisadores da Colorado State University e do Australian Bureau of Meteorology conduziram pesquisas sobre a pureza do ar acima da Antártica.
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They found a region over the Southern Ocean, between the south of Australia and Antarctica, that was "unaffected" by human activity. start learning
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Eles encontraram uma região sobre o Oceano Antártico, entre o sul da Austrália e a Antártica, que não foi "afetada" pela atividade humana.
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The scientists said the area they researched formed the atmosphere in the lower clouds. start learning
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Os cientistas disseram que a área pesquisada formou a atmosfera nas nuvens mais baixas.
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The analysis of the air showed that it was totally free from "anthropogenic aerosols". start learning
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A análise do ar mostrou que estava totalmente livre de "aerossóis antropogênicos".
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These are pollutants or particles derived from human activity, or dust from other continents. start learning
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São poluentes ou partículas derivadas da atividade humana ou poeira de outros continentes.
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The scientists called this pollution-free area, "truly pristine". start learning
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Os cientistas chamaram essa área livre de poluição de "verdadeiramente intocada".
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The scientists analysed the structure of airborne microbes in the lower clouds over the Southern Ocean. start learning
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Os cientistas analisaram a estrutura dos micróbios aerotransportados nas nuvens mais baixas sobre o Oceano Antártico.
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They looked at the DNA of the microbes and tracked where they came from. start learning
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Eles examinaram o DNA dos micróbios e rastrearam de onde vieram.
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Their analysis included monitoring wind trajectories to detect how far the microbes may have travelled. start learning
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A análise deles incluiu o monitoramento das trajetórias do vento para detectar a distância que os micróbios podem ter viajado.
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They found that the atmospheric eco-system was very much "isolated," self-contained, and free from contaminants from elsewhere in the world. start learning
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Eles descobriram que o ecossistema atmosférico era muito "isolado", autocontido e livre de contaminantes de outras partes do mundo.
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The source of the microbes was the Southern Ocean, rather than airborne pollutants from other continents. start learning
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A fonte dos micróbios era o Oceano Antártico, em vez de poluentes aerotransportados de outros continentes.
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The researchers concluded that the Southern Ocean is one of very few places on Earth that has been "minimally affected by anthropogenic activities". start learning
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Os pesquisadores concluíram que o Oceano Antártico é um dos poucos lugares na Terra que foi "minimamente afetado por atividades antropogênicas".
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