The Grand Inga project requires an estimated $80 billion in investments to produce 40,000 megawatts of electricity—enough not ...

Capable of holding a staggering 185 cubic metres of water, the world's largest man-made lake is in crisis as water levels hit ...

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The mega-coral measures 34 metres by 32 metres – making it larger than a blue whale – and it is thought to be three centuries ...

Now, less than a month after those dams came down in the largest dam removal project in U.S. history, salmon are returning to spawn in cool creeks that have been cut off to them for generations. Video ...

Now, less than a month after those dams came down in the largest dam removal project in U.S. history, salmon are once more returning to spawn in cool creeks that have been cut off to them for ...

A giant female Chinook salmon flips on her side in the shallow water and wriggles wildly, using her tail to carve out a nest in the riverbed as her body glistens in the sunlight. In another moment ...