KATHMANDU — The number of tigers in Nepal has nearly tripled over the past 12 years, officials announced July 29, on the occasion of International Tiger Day. The figure of 355 tigers blows past the 250 that the Himalayan country was expected to achieve as part of global efforts to double the wild tiger population. Nepal was home to 121 tigers in 2010, the same year that it and 12 other tiger range countries agreed to double the population of Panthera tigris by the next Year of t