China tests a Stirling engine in orbit

The China National Space Agency (CNSA) has made considerable progress in recent years with the development of its Long March 5 (CZ-5) rocket and the completion of its Tiangong-3 space station. The agency also turned heads ...

Satellites reveal hotspots of global river extent change

Rivers are one of the most dynamic components of the water cycle on Earth's surface and play a significant role in the development of human societies, ecosystem sustainability, and regional climate. However, their natural ...

Dammed thirsty: the cross-border fight for water

With half the world experiencing water scarcity for at least part of the year, the huge dams being built by some countries to boost their power supplies while their neighbors go parched are a growing source of potential conflict.

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