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As part of our monthly series on ethics in science and technology, we'll look at the growing practice of deep-brain stimulation to treat illnesses that range from chronic pain to Parkinson's disease.

Sydney Pollack begins his documentary

Historic buildings in the Islamic world are often covered with breathtakingly intricate geometric designs. Both artists and mathematicians have long puzzled over them, wondering how the patterns were created. A new study suggests the artisans worked from templates that drew upon advanced math principles.

Identity theft is getting more sophisticated. Nowadays, teams of thieves work to attack large organizational systems with the goal of stealing thousands of credit card numbers. Your medical records are also at risk, and there are many questions being raised about the privacy on social networking sites, like Facebook. We discuss the newest forms of ID theft, and what you can do to protect your privacy online.

One week after deadly shootings at Virginia Tech that killed 33 people, students and faculty returned to campus and to the classroom. The day was a mix of emotions, as the school's community sought to move forward with the remainder of the semester while still grieving those who died.

Dan Brown's latest book "The Lost Symbol" is flying off the shelves and Oprah has picked a new book-club book. Things are looking up for the publishing industry, especially since this fall promises books from some of the leading fiction and non-fiction writers working today. We'll preview the fall season and recommend some books that you can read right now.

Some scientists believe the orangutan — a Malay word that translates to "man of the forest" — may soon become extinct, wiped out by the humans it so closely resembles. We travel to the Indonesian island of Sumatra to profile competing plans to save the great ape.

The current debate over waterboarding may be new, but the practice is not. It predates the Inquisition and has been used, off and on, around the world ever since. The interrogation technique has been modified slightly but, in essence, has changed very little in the past 500 years.

How does human song relate to the songs of other animals? We talk to Dr. Aniruddh Patel about the connection between human and animal songs. We also discuss how song relates to language, and other cognitive functions.

The Oprah Winfrey Leadership Academy for Girls in Johannesburg, South Africa, is being rocked by allegations of abuse. Sowetan reporter Gertrude Makhafola explains the facts of the case and takes listeners inside the investigation.