"Energy transition" is a very common term but has no official definition. This article reviews the four key theories and what ...

Add Yahoo as a preferred source to see more of our stories on Google. Astronomers have to use indirect evidence, like the explosions of Type Ia supernovae, to investigate the impacts of dark energy.

Dark energy is still one of the greatest cosmic mysteries. For all the time, money and telescopes that humanity has used to uncover its nature, scientists are still asking a fundamental question: What ...

WASHINGTON, Dec 18 (Reuters) - Scientists and companies have been trying for decades to harness fusion energy, the process that fires the sun, to generate electricity on Earth. Fusion energy, the ...

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