Archive for January, 2014

Primordial black hole search called off

January 21, 2014 Leave a comment

A new analysis rules out the remaining mass window of primordial black holes as candidates to explain dark matter, I reported for Nature on Friday.

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Physicists discover 3D “graphene”

January 16, 2014 Leave a comment

A Dirac semimetal has the same electronic properties as graphene, but in three dimensions, I report in Nature.

X-ray source may never be built

January 16, 2014 Leave a comment

The US National Science Foundation has spent millions on the development of a novel X-ray source that may never be built, I reported last month for Nature.

Redefining the Amp

January 16, 2014 Leave a comment

An experiment tracking single electrons flowing across a chip may enable the electrical unit of current to be rationally redefined.

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