Nowadays they build with trees. Just like the wall erected many years ago, the world's largest man-made forest should stop ...

The howling of wind and pounding of hooves, the battle cries and clinking of cold glistening sword, the solemn chanting of ...

To connect worlds, one had to protect them. The Han emperors understood this, and the Great Wall was built over 11,000 ...

NOVA: When Whales Could Walk Wednesday, April 2 at 9:00 pm In Egypt’s Sahara Desert, massive skeletons with strange skulls ...

From 6000 BC, the Chinese harvested salt crystals from Lake Yungchen which partially dried in the summer sun. Many other ...