When did humans start using roads?

We can thank the pyramids of Giza for roads. A vital part of our built environment, they've been a staple of human existence for millennia. How they are built and used reveal a lot about our own modern societies and economies, ...

Scientists reach tallest tree ever found in Amazon

After three years of planning, five expeditions and a two-week trek through dense jungle, scientists have reached the tallest tree ever found in the Amazon rainforest, a towering specimen the size of a 25-storey building.

Satellites detect methane plume in Nord Stream leak

Following unusual seismic disturbances in the Baltic Sea, several leaks were discovered last week in the underwater Nord Stream 1 and 2 gas pipelines, near Denmark and Sweden. Neither pipeline was transporting gas at the ...

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