This story was made possible with a grant from the Pulitzer Center.
Egypt’s first line of defense against climate change is a 22-mile row of shoulder-high, star-shaped concrete blocks piled along the beach outside the ancient Mediterranean port city of Alexandria.
The blocks, which counteract erosion, are meant to protect a precious landscape from the crush of sea level rise: The Nile Delta, one of the most fertile and densely populated rural…


