In 2004, the History Channel's "Modern Marvels" series aired an episode dedicated to one of the world's most critical natural resources. "Some experts contend that rubber is the fourth most critical ...

Renato Cordeiro, 57, harvests rubber from a hevea tree (Hevea brasiliensis) near his home - Copyright AFP Pablo PORCIUNCULA Renato Cordeiro, 57, harvests rubber from ...

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