Pete Casey’s epic, six-year trek along the entire length of the Amazon River nears its final steps for his ambitious journey. There was the pit viper that bit his pant leg. River pirates and ...

There are a couple of rivers David mentions in this clip but the focus is on the biggest of them all, the Amazon ... between the two is so narrow it collapses. Then the river takes the shorter ...

At 4,130 miles (6,650 km) long, the Nile in Africa is the longest river in the world. Some people consider the Amazon in South America to be longer. This is because the many hundreds of channels ...