Our cities are hidden power stations

Waste heat and locally-produced renewable energy can be generated by compact, “urban power plants” that are efficient enough to supply heat to entire housing estates.

Why the passenger pigeon died out

The passenger pigeon was once among the most numerous species on earth. The last passenger pigeon died in the Cinncinati Zoo just over 100 years ago. How did it all go so wrong?

Mystery in the bear cave

The oldest known bear bones from northern Scandinavia have been discovered in a limestone cave. But the cave also contained a mystery.

Laste ikon
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