There are any number of questions that can be answered by Wikipedia, but you can add "where am I?" to the list. Given any latitude/longitude coordinates, the WikiLocation API will find you corresponding Wikipedia articles to tell you about your surroundings.
As demand for Big Data applications continues to increase developers are being forced to confront some fundamental issues associated with traditional extract, transform and load (ETL). Simply put the ETL processes and technology they have in place was never designed to handle loading massive amounts of data into an application.
The Integrated Earth Data Applications are accessible through a variety of APIs and clients, including REST, SOAP, an Open Geospacial Consortium, and an "Open Archive Initiative Protocol for Metadata Harvest." These can be used to create maps, visualize data, plot sample positions and create customized data compilations. Funded by the US National Science Foundation (NSF), the IEDA provides "data services for observational solid earth data from the Ocean, Earth, and Polar Sciences" to support the work of the geosciences community.