Bolivian President Evo Morales is staking his bid for a third term on improving the lot of his poorest citizens. But many of those poor Bolivians work in mines, where conditions are deadly and there's little sign that anything is set to improve.
Ethanol has largely fizzled here in the US. But in Brazil, people have been driving their cars for years powered only by sugarcane ethanol. In recent years though, ethanol in Brazil has hit a speed bump.
Peru recently imposed a nationwide teachers test in an effort to improve the country's education system, but unfortunately, more than 90-percent of the teachers failed the exam, as The BBC's Dan Collyns reports from Lima.
Rio's police have a reputation for violence and corruption so the Brazilian government has joined with some gun control advocates to try to retrain the city's police, with lessons on ethics and human rights, as Ruxandra Guidi has the story.