We head to Brazil for a closer look at the world's first anti-corruption software. It might not be capable of stopping the graft scandals engulfing the country, but it does keep track of MPs' expenses. Behind the software are four young Brazilians, who now plan to export their invention worldwide. Also, UN monitors in Colombia say FARC rebels have handed over the last of their weapons, marking a key milestone in a peace deal agreed last year.

And a total solar eclipse will cross the continental United States on August 21. Some of the best viewing locations are expected in the state of Oregon and preparations are already in full swing.