conservationists are working to bring a once-dying river delta back to life. On a stretch of the Colorado River, which on the Mexican side of the frontier is mostly a dry riverbed, native cottonwood ...

The roughly 65-foot-tall tree is believed to have been planted in the 1930s, as the initial construction on West Campus was nearing completion. With large cavities in its trunk, dying limbs and ...

IN a drought-hit Mexican border region at the centre of growing competition with the United States for water, ...

On a stretch of the Colorado River, which on the Mexican side of the frontier is mostly a dry riverbed, native cottonwood and willow trees have ... other wildlife into a dying ecosystem.