Clouds save Earth from runaway greenhouse hell
The cooling effect of clouds may be what is standing between us and the sweltering conditions seen on Venus
Fixing broken brains: a new understanding of depression
Untreatable depression is on the rise, hinting at fundamental flaws in our understanding of the illness. But new treatments offer hope for everyone
Emmy equals Einstein squared
Discovering symmetry's unsung heroine is all part of a very wild ride through Dave Goldberg's book The Universe in the Rearview Mirror
A garden of my own amid a sea of garbage
In Djenné, Mali, a green-fingered local takes some time to tend his garden in this runner-up photo from the Travel Photographer of the Year 2012 competition
'Parasitism is the most popular lifestyle on Earth'
Parasites are all around us – humans alone have 100 – yet they receive little attention. That should change, says ecologist Kevin Lafferty
Outbreak of global warming optimism is naive
Hopes that we have extra time to rein in emissions and avoid severe climate change are missing the bigger picture, says an energy industry watcher
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