News reports tell of the devastation left by a direct hit from Category 4 Hurricane Maria. Puerto Ricans already coping with damage from Hurricane Irma, which grazed the island just days before, were slammed with an even stronger storm on September 20, bringing more than a foot of rain and maximum sustained winds of at least 140 miles per hour. There is still no electricity—and likely won’t be for weeks or months—in this U.S. territory of 3.4 million people, many of whom also lack running water. Phone and internet service is likewise gone. Nearly all of Puerto Rico’s greenery has been blown away, including trees and food crops. A major dam is leaking and threatening to give way, endangering the lives of tens of thousands. This is a huge unfolding tragedy. But it’s also an opportunity to learn lessons, and to rebuild very differently.