North America with its vast and varied topography ... Examining geological surveys and maps alongside these river courses reveals fascinating insights into their past and future flows.

An example is the Casiquiare River in South America. It runs between the Amazon and the Orinoco, two vast watersheds. It flows into the Rio Negro after branching off from the Orinoco. After ...

The Missouri River is the longest river in North America. It flows for nearly 4,000 km before joining the Mississippi River. The taiga forest is a biome spread over several continents in the ...