Tuesday on Worldview:

Mexico’s Institutional Revolutionary Party, also known as the PRI, has returned to power with the election of Enrique Peña Nieto, who won the country’s presidential election on Sunday. The PRI had dominated the country’s politics for more than 70 years but was swept out of government in 2000. Peña Nieto has promised a series of reforms but many Mexicans remain skeptical that the party has really transformed itself.

Worldview talks with John Ackerman, a law professor at the Institute for Legal Research of the National Autonomous University of Mexico, about the election’s implications. David Vidal, a member of the Mexican student movement YoSoy132, also joins the conversation. YoSoy was hoping to see a defeat of Pena Nieto.

Then, America’s largest export is trash. Edward Humes, author of Garbology: Our Dirty Love Affair with Trash tells Worldview why the country is such a prolific producer of garbage.