Study suggests tectonic plates began moving half a billion years earlier than thought

The University of Chicago reports that a new study led by UChicago geochemists rearranges the picture of the early Earth by tracing the path of titanium through the Earth’s crust buy cheap cialis across time. The research, published Sept. 22 in Science, suggests significant tectonic action was already taking place 3.5 billion years ago—about half a billion years earlier than currently thought.