Nature
The Power in This Eagle
Filmmaker Fergus Beeley comments on the impressive strength of the great harpy eagle.
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A City of Twelve Million
Leafcutter ants shift 40 tons of soil to make their subterranean home.
Nature
A Crystal Chalice
Male swiftlets use their own building material, gluey saliva, to make their nests.
Nature
Radioactive Wolf Pups
Scientists compare wolf pups living outside Chernobyl with those living inside the zone.
Nature
Bison Take on the Wolves
A family of bison ward off a pack of wolves as they begin to feed on a fallen calf.