Mexico took its first gold medal today with its stunning win over Brazil in soccer, bringing a burst of joy to a struggling nation.
He sold his mansion, Porsche, and yacht and set off for Cambodia to provide food, shelter, and education to destitute children.
Wealthy Western nations are financially exhausted and unwilling to commit to help fund greener development for poorer nations. Will this week's conference in Rio find any solutions?
Guest blogger Vukasin Petrovic asks why US retains positive ties with Equatorial Guinea's long-ruling president Teodoro Obiang Nguema, despite evidence of brutality, corruption, and neglect of his people.