Deep-Earth Conditions Illustration (IMAGE) DOE/SLAC National Accelerator Laboratory Caption Researchers recreate deep-Earth conditions to see how iron copes with extreme stress. Credit Greg Stewart/SLAC National Accelerator Laboratory Usage Restrictions Use with credit License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.