Resumen de The challengers.

• The article focuses on leaders who are shaking up the status quo in their nations or internationally in the 21st century. It talks about Pope Francis and his efforts to return the Catholic Church to its ideological roots with an emphasis on the importance of service and kindness. It mentions Amherst University graduate student Thomas Herndon and professors Michael Ash and Robert Pollin who discovered errors in the work of economists Carmen Reinhart and Kenneth Rogoff concerning economic growth during times of too-high debt that may disprove findings about austerity measures. It talks about Arvind Kejriwal, founder of the Aam Aadmi Party in India, who is leading an campaign to eliminate corruption in New Delhi and refocus government on the needs of its citizens.