A dam built in the 1960's by the Department of Antiquities, and the ancient Mudlim tunnel, both built to protect the area from flooding, in Petra, Jordan, Nov. 15, 2018. Efforts to restore damaged but once fertile land in Jordan's desert is sprouting hope for one of the world’s most water-scarce nations, as a land assessment report Wednesday, April 27, 2022 warns about the effects of degradation. (AP Photo/Laure Van Ruymbeke, file)