Editor’s Note: Monthly Ticket is a CNN Travel series that spotlights some of the most fascinating topics in the travel world. In September, we’re celebrating superlatives as we look at some of the ...

Alter do Chao, Brazil: The five-month expedition, due to set off in April 2024, will include the use of modern river-mapping satellite technology to scientifically prove the Amazon is the longest ...

The Madeira River is the largest tributary flowing into the Amazon River and is home to many people living on the banks. These residents drink and eat fish from the river, so its water quality ...

There’s much to do onboard, including lectures on wildlife and culinary classes on how to make the perfect pisco sour and ...

(CNN) — In today’s modern age, it might be fair to assume that science has decisively answered some of the bigger questions regarding the natural world – or at least those dependent upon sheer ...