Experimental Burn in Portugal (IMAGE) American Geophysical Union Caption During an experimental burn in Portugal, researchers find that hot, intense fires yield cool underlying soil, contradicting previous research. Credit Cathelijne Stoof Usage Restrictions None License Licensed 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.