Physics
Unlocking Mercury’s secrets
Features
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Issue 2637
Slammed for their failure to explain how our particular universe came to exist, string theorists are fighting back
The next generation of genetically modified plants offers real benefits, but brings new risks, so we need a better way to test their environmental impact
If you want answers to the solar system's big questions, get as close to the sun as you can, says Stuart Clark
NASA climatologist James Hansen has been at the centre of the political drama surrounding climate change in the US and his story needs telling, says Chris Mooney