the global natural asset marketplace is too broad a concept, natural assets can be anything, can you be more specific on what aspect/sector you want to focus on? natural energy?
Natural asset marketplace is a broad concept, true. 
The project focus is in tokenization of Renewable Energy Certificates, Carbon Credit Assets, Recognized Environmental Conditions (REC, e.g. the presence of any hazardous substances or petroleum products on a property), metered output, and climate assets.
Natural Asset Exchange & Earth Token will
 Provide a free, open, transparent and universally accessible platform connecting producers of Natural Assets with buyers
 Eliminate fraud and double counting of Natural Assets
 Provide sellers with flexible pricing mechanisms
 Reduce complexity related to fiat currency exchange rates
 Eliminate registration fees for both buyers and sellers
 Eliminate the need for, and costs associated with, external 3rd party registries for both buyers and sellers
 Eliminate the requirement for buyers to fund escrow accounts
 Eliminate minimum transaction volumes
 Result in reduced transaction fees
 Simultaneous fulfillment & settlement reducing current lead-times
 Enable embedding of Natural Assets directly into products and or services
 Enable universal access to Natural Asset project investments, creating sustainable, risk-adjusted, long-term returns for all participants