Professor David McGrath says he's willing to pack a loaded pistol in class if gun laws change. He feels it's his responsibility to protect his students at the University of South Alabama at any cost - even his own life. David talks to Dick Gordon about why he believes training teachers to use guns on campus may give students a better chance of surviving a shooting. also in this epsiode: a broom of one's own.
Ma Jun, a former investigative journalist in Beijing, is pressuring global companies to clean up their act in his country. Using public information, he has made maps of the air and water pollution left by the supply chain of companies such as Apple.