What is the Dujiangyan irrigation system, which is over 2,000 years old and is listed as a UNESCO World Heritage Site, and ...
New research reveals Sumer’s cities may have risen with the tides, rewriting the origin story of the world’s first ...
Farmers have relied on these irrigation ditches for generations. Now, climate change threatens to turn them into relics of the past. Albuquerque’s South Valley is surrounded by brown desert and ...
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