One of D.C.’s newest trophy office buildings now has the city’s biggest green wall. 17xM, a 334,000-square-foot, 11-story building at 1150 M Street, N.W., includes a two-story, 1,500-square-foot, self ...

The project will see a 4,722-mile green wall that will aim to restore 100 million hectares of degraded land, capture around 250 million tonnes of carbon by 2030, and create roughly 10 million jobs.

After years of delays due to insufficient funding and prevailing conflicts, the Great Green Wall in the Sahel, aimed at preventing desertification, gained momentum with an accelerator program ...