Human disruption to Earth's freshwater cycle has exceeded the safe limit, our research shows

By Arne Tobian, PhD Candidate in Planetary Boundaries, Stockholm University
Dieter Gerten, Working Group Leader, Terrestrial Safe Operating Space, Potsdam Institute for Climate Impact Research
Lan Wang Erlandsson, Researcher and Theme leader, Anthropocene Dynamics, Stockholm Resilience Centre, Stockholm University

Green water – the rainwater available to plants in the soil – is indispensable for life on and below the land. But in a new study, we found that widespread pressure on this resource has crossed a critical limit.

The planetary boundaries framework – a concept that scientists first discussed in 2009 – identified nine processes that have remained remarkably steady in the Earth system over the last 11,700 years. These include a relatively…

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