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 ...

Fusion breakthrough is a milestone for climate, clean energy

Scientists announced Tuesday that they have for the first time produced more energy in a fusion reaction than was used to ignite it—a major breakthrough in the decades-long quest to harness the process that powers the sun.

EXPLAINER: Why fusion could be a clean-energy breakthrough

The Department of Energy is planning an announcement Tuesday about a "major scientific breakthrough" at the Lawrence Livermore National Laboratory, one of several sites worldwide where researchers have been trying to develop ...

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