Dozens of nations and international organisations have endorsed a 10-year blueprint for a global climate watch system that would let governments share information about the Earth to assess climate change, forecast natural disasters and fight disease. The Earth Observation Summit assembled 47 nations and more than two dozen international scientific and humanitarian organisations in Tokyo to discuss forming a monitoring system by 2005. Details aren't expected to emerge until next year, but the plan through 2015 seeks to save billions of U.S. dollars and lives lost due to drought or diseases such as malaria.