The most powerful aftershock yet struck Haiti on Wednesday, adding increased instability to the country that is barely recovering from last week's monstrous 7.4 magnitude earthquake. The magnitude-6.1 temblor was the largest of more than 40 significant aftershocks that have followed the January 12 earthquake. The extent of additional damage or injuries was not immediately clear. The aftershock sent U.S. soldiers and tent city refugees racing for open ground, as clouds of dust rose in the capital, Port-au-Prince. The U.S. Geological Survey said Wednesday's quake was centered about 35 miles northwest of Port-au-Prince and 6.2 miles below the surface, a little further from the capital than last week's epicenter was. Last week's quake killed an estimated 200,000 people in Haiti, left 250,000 injured and made 1.5 million homeless, according to the European Union Commission.
