The Federal Government should launch a series of efforts to assess thoroughly the condition of U.S. ecosystems and the social and economic value of the services those ecosystems provide, according to a new report by the President’s Council of Advisors on Science and Technology (PCAST), an independent council of the Nation’s leading scientists and engineers. The report also recommends that the Nation apply modern informatics technologies to the vast stores of biodiversity data already collected by various Federal agencies in order to increase the usefulness of those data for decision- and policy-making.One of the key challenges we face in assessing the condition of ecosystems is that a lot of the data pertaining to these systems is locked up in individual databases. Even though this data is often collected using government funds, it is not always available to the public and in other cases available but not in usable formats. This is a classical example of a data integration problem that occurs in many other domains.