Since the mid-1900s, humans have been exerting an ever-increasing impact on the global nitrogen cycle. Human activities ... Increases in available nitrogen can alter ecosystems by increasing ...

Here we report the profound and yet uncertain consequences of the human imprint on the phosphorus cycle and nitrogen ... imply an increase of the nutrient deficit in developing regions.

Humanity has thrown the global water cycle off balance “for the first time in human history,” fueling a growing water disaster that will wreak havoc on economies, food production and lives ...

"With this model, we offer the most complete possible understanding of this cycle on a large ... lay in these direct human activities. First, it turns out that nutrient input through, for example ...

The world’s water cycle is out of balance ”for the first time in human history,” according to a new report. The Global Commission on the Economics of Water, which is made up of global ...