No Precedent (IMAGE) Earth Institute at Columbia University Caption Defoliated and uprooted trees in Puerto Rico's Toro Negro state forest following October 2017's Hurricane Maria. A new study shows that damage from the storm was not only worse than, but different from any previously documented event. Credit Kevin Krajick/Earth Institute, Columbia University Usage Restrictions Credit must be given. 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.