Religions of Ancient China

The Great Wall of China was constructed over several centuries and claimed the lives of thousands of builders.

It took millennia to build, but today the Great Wall of China stands out as one of the world's most famous landmarks.

Each year, government estimates suggest roughly 200,000 Americans are involved in cults—often in secret and largely by choice. Who are they? And what can we learn from the tragic story of Heaven’s Gate?

With just 37 seconds to react, could Titanic have avoided disaster—or was the tragedy inevitable?