KNOW YOUR SHIT

People today take more photos in two minutes than they did in the whole of the 19th century. The Andromeda galaxy is 2.6 million light years from Earth, but can be seen with the naked eye. The first marathon was undertaken in 490 BCE by a Greek messenger running from Marathon to Athens - unfortunately, he died of exhaustion when he arrived. Whether you want to know about history, science, literature, technology, sport, geography or almost any other subject, this is your essential guide.