The 12 Longest Rivers In The World

There are some amazingly long rivers in the world but which are the longest? Here's a list of the top 12 longest rivers in the world featuring well known rivers such as the Nile, Amazon and Mississippi. While most scientists and researchers agree on the order, accurately measuring the length of such enormous rivers can be difficult and there is at times disagreement on where a river starts, where it finishes and its accurate length.