Looking into it further, the team determined that the Amazon river really did flow in the opposite direction in the past. That team put the reversal down to a highland area in northeastern South ...

If there is lots of rainfall, or snow or ice melting, rivers sometimes rise over the top of their banks and begin to flow onto the floodplains at either side. Rivers meander where there is the ...

The Amazon river is the largest drainage system in the world in terms of water volume and its drainage basin. The 6,400 kilometer (4,000 mile) river flows from the Andes Mountains of Peru ...