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Climate change may explain Maya rise and fall, study says Argument has raged for decades over what doomed the ancient Maya civilization and spurred its people to abandon their awe-inspiring temples and pyramids in the rain forests of Mexico and Central America. Warfare, disease, social unrest and over-farming have all been cited as potential factors in the decline of a culture that was scientifically and culturally advanced for 750 years. Click on the following link to view LA Times article of Nov 17, 2012:  http://soc.li/aFqnMQg Chuck

Thought you would like to read this article on research that the stone-tipped spear invented earlier than thought. It was among early man's greatest technological feats: a fully engineered weapon that combined a wooden shaft, mixed adhesives and a stone that had been chiseled to a lethal point. Click on the link below to read the LA Times article: http://soc.li/gmxQuB Chuck

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