[article] A passenger train plowed into a herd of elephants in West Bengal, killing seven, including two calves, as they lumbered across the tracks in a forest, authorities said Thursday. The crash was the worst of its kind in recent memory, said Hiten Burman, forestry minister in West Bengal. Ten other elephants were seriously injured and the death toll could rise, he said. The train was traveling at 80 kilometers (50 miles) an hour through the Chapramari Forest when it struck the herd of 40 elephants crossing the tracks on Wednesday at dusk, Burman said. “The herd scattered, but returned to the railway tracks and stood there for quite some time before they were driven away by forest guards and railroad workers who rushed to the spot after the accident,” he said. Burman said railway authorities have ignored requests from his department to have trains reduce their speeds inside the elephant corridor in Jalpaiguri district, about 670 kilometers (415 miles) from Kolkata, the state capital.