Continuing industrialization in the twentieth century polluted air around the globe. But now, a study suggests that this process did not just affect people’s lungs: it also swelled rivers. By blocking the Sun, aerosol pollutants slowed evaporation, leaving more water on the ground to fill river basins…That effect has been observed following major volcanic eruptions that inject ash into the atmosphere on a global scale, points out Alan Robock, a climatologist at Rutgers University in New Brunswick, New Jersey. Given the various factors at play, says Robock, "I certainly wouldn’t suggest making the air dirtier."
/ / / Dirty skies can swell rivers