Estuaries are dynamic ecosystems that have some of the highest biotic diversity and levels of production in the world. Humans have had a long relationship with the ebb and flow of estuaries around the ...

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 that ...

Peter Suciu writes about the latest trends in aerospace and defense. His work has appeared in more than four dozen magazines, newspapers and websites.