SpaceCrisis in cosmology: If we’ve got dark energy wrong, what could it be?This is a New Scientist special package about shock results that have upended cosmology. What do they mean for our models of the universe, and what are the alternative explanations?Features
91ɫƬWe can block the spread of HIV: Best ideas of the century The “enormous revelation” that drugs can be used to prevent catching HIV has benefitted millions and helped slash transmission rates Features