a gripe que mudou o mundo, elementos químicos em extinção


Como a gripe espanhola mudou o mundo há cem anos http://alias.estadao.com.br/noticias/geral,como-a-gripe-espanhola-mudou-o-mundo-ha-cem-anos,70002121593

The Periodic Table of Endangered Elements: Visualizing the Chemical Elements That Could Vanish Before You Know It http://www.openculture.com/2017/12/the-periodic-table-of-endangered-elements.html

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