Emerging evidence suggests that plate tectonics, or the recycling of Earth's crust, may have begun much earlier than ...

"We start to see zircon structures that start to look more and more like what we see in subduction zones today," study author Nadja Drabon, an Earth and planetary scientist at Harvard University ...

Find out more about how we test. This review first appeared in issue 361 of PC Pro. Zircon is a gemstone not to be confused with the synthetically produced cubic zirconia. Instead, it’s a ...