President Trump has threatened to slap new tariffs on Mexico for failing to deliver water under a decades-old treaty. But ...

Colombia’s capital has always seemed immune to water scarcity, nestled among cloud-kissed Andean peaks and known for steady ...

1 School of Resources and Civil Engineering, Suzhou University, Suzhou, China 2 National Engineering Research Center of Coal Mine Water Hazard Controlling, Suzhou, China Introduction: Deep karst ...