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28 August 2014 Last updated at 11:08 ET

Dead stars 'can re-ignite' and blow

Astronomers have shown that dead stars known as white dwarfs can re-ignite and explode as supernovas.


miceMemories 'flipped' from bad to good

Neuroscientists artificially turn a mouse's fearful memory into a positive one, and vice versa.

File photo: Bardarbunga, 7 November 1996 Iceland examines volcano 'cauldrons'

Scientists in Iceland say they are examining several depressions, termed 'cauldrons', near Bardarbunga volcano, which could be a sign of an eruption.

Special Reports

GrapheneMaterial advantage

How cutting-edge materials science is transforming the world

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Our Experts

Jonathan Amos Article written by Jonathan Amos Jonathan Amos Science correspondent

Rosetta's 10-billion-tonne comet

Scientists determine the comet being followed by Europe's Rosetta spacecraft to have a mass of 10 billion tonnes.

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Matt McGrath Article written by Matt McGrath Matt McGrath Environment correspondent

Coral munching bumphead fish give insight into conservation

Species that have both positive and negative impacts on their environment are giving new insights into how to save those under threat.

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David Shukman Article written by David Shukman David Shukman Science editor

Five critical steps involved in putting a lander on a comet

How do you land on a comet? That's problem facing the people running Esa's Rosetta mission after the successful rendezvous with Comet 67P/Churyumov-Gerasimenko.

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Features & Analysis

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