Tom Lehrer, the great American satirical songwriter and mathematics
professor, turns 86 on 9 April. Our exercises look at his classic song "Pollution" and feature the words you need to talk about the environment.
Through Latin, the Romans made a major contribution to European languages. Knowing some common roots and prefixes can be the key to understanding unfamiliar words, not just in English. Practise 10 common Latin prefixes in our exercise.
The BBC radio series Germany: Memories of a Nation is using around 70 objects, including famous buildings and works of art and literature, to revisit 600 years of German history. The aim is to correct an image of Germany that is still defined by the Second World War.