However, evidence suggests that while the canal systems of the ... without the need for further irrigation. Critics might point out the difficulty of scaling up ancient technologies for global ...

The Spanish built acequias throughout the Southwest, but most in Arizona and California were abandoned or replaced by modern irrigation systems. In Texas, a few remain, including the San Antonio ...

However, evidence suggests that while the canal systems of the past may have looked ... and safely grow without the need for further irrigation. Critics might point out the difficulty of scaling up ...

(The Conversation is an independent and nonprofit source of news, analysis and commentary from academic experts.) Ari Caramanica, Vanderbilt University (THE CONVERSATION) Seeing the north coast of ...