How well do you really know your country? Take our quiz. Unaffordable country: where can you afford to buy a house? | Society. Carbon emissions: past, present and future – interactive | Environment. Gay rights in the US, state by state | World news. Datablog + UK riots 2011 | News. The England 'riot commute' mapped: an animation | UK news. Twitter traffic during the riots | UK news. Arab spring: an interactive timeline of Middle East protests | World news. Data journalism and data visualization from the Datablog | News.