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Online lecture series

Strange Genius: The Life and Times of Paul Dirac

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Editor's choice

Physics World magazine special issue on energy and climate change

Download a free PDF of the October 2009 issue

In depth: December 2007

Features

Dark energy: the decade ahead

9 comments

The enduring mystery of the accelerating universe

In praise of Lord Kelvin

4 comments

David Saxon celebrates the great Victorian physicist

Opinion

Dark passions

2 comments

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

A dark future for cosmology

38 comments

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

Dark Energy