Over thousands of years, erosion causes waterfalls to move upstream, leaving a steep-sided gorge behind. The water in river rapids is very fast moving. The river channel is steep and shallow ...

The Earth has a natural water cycle to take care of this. As a river travels downstream, it erodes the landscape. Erosion is when land is worn away by another material. It's a natural process that ...

The lawsuits Louisiana's state and local governments are pursing against oil companies will not solve the coastal erosion problem but will stifle needed income growth.

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