The American Culture Quiz is a weekly test of our unique national traits, trends, history and people — including current events and the sights and sounds of the United States. This week's quiz ...

From a giant dog finding his forever home to drone tests to deliver Amazon parcels, there has been plenty going on in the North East and Cumbria, but can you remember the finer details? Try our quiz..

Here we report the structure of 2-oxoisovalerate dehydrogenase (EC 1.2.4.4), or E1b, of the branched-chain 2-oxo acid dehydrogenase complex that is specific for 2-oxoisovalerate and related 2-oxo ...