The world's oldest river - an incredible 340m years old and 466 miles long
There's no conclusive evidence, but a river reputed by some to be the oldest in the world dates back 340 million years.
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Research finds healthy trout in regional rivers but population concerns remain
Research by Montana Fish, Wildlife and Parks and Montana State University found that the majority of fish in the Big Hole, ...
Dam removal deal could create longest free-flowing California river
The push to remove two dams on Northern California’s Eel River, making it the longest free-flowing river in the state, is ...
11,000-year-old indigenous site — one of oldest on continent — found in Canada. See it
What are we learning about the past? Here are three of our most recent eye-catching archaeology stories.