Water is a limited resource, essential for life. Just as we recognize the value of water, so must we recognize the value of natural systems to store, clean, and maintain clean and fresh water.

An article in London's The Guardian reports on a warning by hundreds of scientists last week that a majority of the world's population, including in developed countries like the United States, is reaching a tipping point where easy access to fresh, clean water will no longer be easily available. They cite climate change, pollution and over-use of resources.