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.
Winners from Germany and Canada take home top prizes.
New observations may provide alternative explanations for dark energy.
We need to double-check the evidence on dark energy, as it may not exist at all, says Prof. Subir Sarkar.