Report puts monetary value on Britain's natural assets
2 June 2011 Last updated at 16:15 BST
The UK's parks, lakes, forests and wildlife are worth billions of pounds to the economy, says a major report.
The National Ecosystem Assessment (NEA) says that for decades, the emphasis has been on producing more food and other goods - but this has harmed other parts of nature that generate hidden wealth.
The report also suggests that the health benefit of living with a view of green space, is worth up to 300 pounds a year, per person.
Jeremy Cooke reports.