Rising CO2 is causing trouble in freshwaters too, study suggests

As carbon dioxide (CO2) levels in the atmosphere rise, more CO2 gets absorbed into seawater. As a result, the world's oceans have grown more acidic over time, causing a wide range of well-documented problems for marine animals and ecosystems. Now, researchers reporting in Current Biology on January 11 present some of the first evidence that similar things are happening in freshwaters too.