 Water is like the bloodstream of the biomass and it's fundamental that we manage its functions and its flows and its Storages in time and space both at the local level, but also of course at the global level And if it gets too disturbed We might reach critical tipping points and this is one of the things that this book talks about is that in some Areas in some regions of the world we are Potentially reaching these critical tipping points in terms of water and land resources Which are then undermines our opportunities for the future Water resources are degraded through two principle ways first with to take out too much water and use it elsewhere So there's not enough water flowing downstream for other uses and other habitats and ecosystem services And the other way is that we pollute water through our development such as in urban areas and industrial Practices and both of these can can affect The ability of ecosystem service to function somewhere else in the landscapes So if we polluting or taking out too much water We undermine the bloodstream functions that we have through fresh water flows in the landscape So from our author's perspective I think that the key key insight we have here is that we have these fundamental challenges and that we are reaching very critical potential tipping points in our fresh water Systems around the globe, but that we also have some opportunities and we can learn from some small cases of success Around the world in different hydrological settings that can inform and help us manage for better prosperity in the future