Nature's Top 40 (2008)

American Ninja Warrior is an action-packed series that follows competitors as they tackle a series of challenging obstacle courses in both qualifying and finals rounds across the country. Those that successfully complete a course in their designated region move on to the national finals round in Las Vegas, where they face a stunning four-stage course modeled after the famed Mt. Midoriyama in Japan.

Alone places ten hardcore survivalists alone in the wilderness - no camera crew, no teams, no producers - on a single mission to stay alive. At stake is $500,000 awarded to the person who can last the longest. They will face extreme isolation and psychological distress as they plunge into the unknown, self-documenting their experience.

The dark side of one of the most beautiful places on earth. Uncovering secrets and lies from the past.

Since it began in 1983, Frontline has been airing public-affairs documentaries that explore a wide scope of the complex human experience. Frontline's goal is to extend the impact of the documentary beyond its initial broadcast by serving as a catalyst for change.

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The Block is an Australian reality television show. The show sees four couples compete against each other to renovate a home in an apartment block and sell it at auction for the highest price.