From endangered freshwater pearl mussels in Ireland to microorganisms in sludge in the Netherlands, scientists across Europe show their research in a photo contest held by the EU-funded CommBeBiz project. The winning three shots were announced during an awards ceremony on 22 February in London, UK.
Newly domesticated horses may have increased the spread of disease.
Sir Peter Ratcliffe on why hypoxia matters.
Dr Michaël Gillon on what's next for exoplanet science.