The Rio Grande became the permanent border between Mexico and the United States.
This section focuses on the dry region north of the Mexican border, detailing the states of Arizona, Oklahoma, New Mexico, and Texas.
This filmmaker tells us what makes Kaikoura, New Zealand a perfect filming location.
Ever wonder what it would be like to work in the Arctic? This filmmaker gives us some insight.
Above the jungles of South America towers the original "Jurassic Park." Join an expedition into this dangerous and exciting jungle.
From the archives of Discovery: Watch as a rescue helicopter and a bird interact with earth's largest ecosystem, the ocean. Learn more about the ocean in this video.
Rainforests are important because they play a vital role in world ecology. Learn more about rainforests in this HowStuffWorks video.
