A Feira de Ciências do Colégio Santo Américo participa do Dia da Ação Climática
24 October 2009
INTERNATIONAL DAY OF CLIMATE ACTION
The Science of 350
Scientists say that 350 parts per million CO2 in the atmosphere is the safe limit for humanity. Learn more about 350 – what it means, where it came from, and how to get there. Read More »
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