Check the article link below for more details and an intro video
Want to know the 1990 CO2 emissions in Botswana? Or the tonnage of potatoes yielded in Ireland every year? Well you can do that and a lot more on DataMarket.com. Data Market is a new entrant in the data space that just launched globally. It lets you search through different datasets, visualize a them on a graph and compare between datasets. Data Market pulls in 100 million time series from many sources including the UN and World Bank.
Data Market is very easy to use and unlike some other competitors you can get a lot for free. They have collected together a large set of data.