"It was so much bigger than what you would expect," Kori Garza said. Earth's oceans are full of big surprises -- something Kori Garza knows better than most. The marine biologist has been on thousands ...

Once widespread across Asia, wild tigers now survive mainly in one country. New official figures reveal where most tigers live today, why it matters globally, and what challenges still remain.

India now boasts the world's largest wild tiger population, estimated at 3,682 individuals, significantly surpassing Russia ...