The content originally appeared on: CNN CNN - Tigers once roamed across Asia, their numbers as high as 100,000 at the start of the 20th century, before the species plummeted to the brink of extinction. By 2006, their population in India - home to the majority of the world's remaining wild tigers - hit a record low of just 1,411 individuals. But decades of conservation efforts appear to have finally paid off. India's tigers have more than doubled since then, […]