In Brazil, the new president is putting together a very different-looking cabinet to his predecessor - a much more market friendly one. His new finance minister is Henriques Meirelles, former head of the central bank. So what is the likely effect going to be on Brazil's wobbly finances?

"Fantastically corrupt". That's how British prime minister David Cameron described Nigeria and Afghanistan earlier in the week. On Thursday he was hosting a global anti-corruption conference in London. Fifty states were represented at the summit, alongside banks, civil society organisations and the International Monetary Fund. Though delegates promised to make tackling corruption a top priority, the meeting led to few firm commitments. Just six countries agreed to publish registers of who really owns companies in their territories, a key goal of anti-corruption campaigners. So - just how much was achieved?

St Louis, in Missouri, made international news two years ago because of race riots in the suburb of Ferguson. But it would rather be known for something else. It's become the unlikely capital of chess - in America if not - here's a boast - the world. David Edmonds has just returned from St Louis, which was hosting the US National Championship.

Can you copyright a language? Obviously you can't claim the rights to Russian, or Spanish or Swahili, but what about a made-up language? That is an issue that an American court will look at later this year when Paramount Pictures and CBS sue the makers of a Star Trek fan movie. One part of that case is the use of the invented language for the warlike alien race, the Klingons. Klingon is a BIG deal. It was invented in the early 1980s by the linguist Marc Okrand for the Star Trek movies.