Forget about the threat that mankind poses to the Earth: our activities may be shortening the life of the universe too. The startling claim is made by a pair of American cosmologists investigating the consequences for the cosmos of quantum theory, the most successful theory we have. Over the past few years, cosmologists have taken this powerful theory of what happens at the level of subatomic particles and tried to extend it to understand the universe, since it began in the subatomic realm during the Big Bang. The Boomerang Nebula, mankind ‘shortening the universe’s life’ Cosmologists claim by observing dark energy the universe has been nudged closer to its death But there is an odd feature of the theory that philosophers and scientists still argue about. In a nutshell, the theory suggests that we change things simply by looking at them and theorists have puzzled over the implications for years. They often illustrate their concerns about what the theory means with mind-boggling experiments, notably Schrodinger’s cat in which, thanks to a fancy experimental set up, the moggy is both alive and dead until someone decides to look, when it either carries on living, or dies. […]