The Colorado River disappeared from the geological record for five million years: scientists now know where it went
18
votes
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Geologists may have solved mystery of Green River's 'uphill' route
15 votes -
The first two botanists who surveyed, and survived, the Colorado River
5 votes -
Tractor driver finds South Island's first moa footprints in Otago river
7 votes -
Why are lakes and rivers in the Canadian Rocky Mountains so brilliantly turquoise blue?
5 votes