SpaceIs our galaxy’s black hole actually made of dark matter? An exotic type of dark matter could explain some of the characteristics of our galaxy’s central supermassive black hole, but many cosmologists are leery of the idea Analysis
TechnologyHow worried should you be about spending too much time on your phone? Screen time has been linked to all sorts of problems, from depression and obesity to poor sleep. But how worried should you really be? Jacob Aron sifts through the evidence Analysis