It is being described as a “national tragedy.” Thirty-two schoolchildren, two teachers and a minibus driver have been killed after their vehicle plunged into a roadside ravine in Tanzania.<br /><br /> It happened in the northern tourist region of Arusha. <br /><br /> The children, aged 12 and 13, were on their way to visit another school.<br /><br /> The bus had been going down a steep hill in rainy conditions when disaster struck.<br />
