Decision to do so peacefully. Hello and welcome to al jazerra live from doha. I am veronica pedroza. The situation in the United States has been dominating the news. Well go live to ferguson and our other correspondents across the United States. But also on the program, no deal on Irans Nuclear program, but the talks to find a settlement are extended until june. And mapping the icy waters of the antarctic, how scientists and robots are charting the extent of global warming. So they are the scenes that the u. S. Hoped it would never see again, armed police, tear gas, burning buildings, protesters took to the streets following the decision not to charge a white policeman who shot dead an unarmed black teenager earlier this year. The death of 18yearold Michael Brown in the Missouri Town of ferguson struck a nerve across america. We can show you the scene in ferguson right now. These are live pictures from the town near st. Louis. You can see there is a car thats been set on fire. There ha