The Earth is absorbing more sunlight and trapping more heat than it releases into space, causing our planet to warm up at an ...

This is really only something to be done if your mirrors are so dirty that they're obstructing your view. If this is the case ...

Professor Richard Allan, lead author of the study at the University of Reading, said: "Think of Earth as a mirror reflecting sunlight back to space. Over time, that mirror is getting dirtier ...