Hurricane Maria roared onto Puerto Rico's shores on Sept. 20, 2017, plunging the island into darkness, crippling its infrastructure and leveling homes. Researchers from George Washington University hired by Puerto Rico's government estimated last month that 2,975 people had died because of Maria in the six months after it made landfall, a number Puerto Rico has accepted as official. An after-action report by FEMA found it had underestimated the food and fresh water needed, and how hard it would be to get supplies to the island. Puerto Rico was understocked in part because Hurricane Irma struck two weeks before Maria, battering the U.S. Virgin Islands. Images via Getty.