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Editor's choice

Jan 19, 2014

A special free-to-read digital edition containing 10 of our very best feature articles on the science and applications of light

Opinion: December 2007

Dark passions

Understanding the accelerating universe is almost as difficult as deciding who should gain credit for its discovery

A dark future for cosmology

Lawrence Krauss on why we will never understand the true nature of dark energy

Dark Energy

Robert P Crease describes the discovery of the accelerating universe