We’ve known for a while that Mars was once a wet world. But there’s always been a geological puzzle regarding how and where that water moved. On Earth, rivers are largely driven by plate tectonics.

Climate change is disrupting the seasonal flow of rivers in the far northern latitudes of America, Russia and Europe and is posing a threat to water security and ecosystems, according to new research.

Rivers are supposed to follow gravity, flowing from higher ground to lower ground in one clear direction. Yet around the world, there are rare moments when rivers behave unexpectedly and start flowing ...

Climate change is disrupting the seasonal flow of rivers in the far northern latitudes of America, Russia and Europe and is posing a threat to water security and ecosystems, according to research ...