Syria. Bad bites. We look at some of the chemicals in your favorite foot that are banned almost everywhere else in the world. Good evening. Thanks for bing with us. Ijoie chen. The florida man accused shooting an unarmed teenager took the stand explaining why he had to stand his ground. There are strong echoes of last years trial of George Zimmerman in the death of teenager tray von martin. Zimmerman did not testify in his own trial. But on the stand, in something of a surprise appearance, dunn said he shot the teen repeatedly because he had no choice. The argument over loud music in a parking lot had escalated to the point where he claimed he feared for his life. After hearing the something, something cracker and this and that, i hear, i should kill that bleep . And then even morelvated voice, i hear i should bleep kill him. Now, he is screaming. When he says yeah, i am going to bleep kill you, i look and i am looking at a barrel. He is showing me a gun, and he is threatening me. As i