Spending time immersed as a virtual character or avatar in a role-playing video game can numb you to realizing important body signals in real life. This message comes from Ulrich Weger of the University of Witten/Herdecke in Germany and Stephen Loughnan of Melbourne University in Australia, in an article in the journal Psychonomic Bulletin & Review, published by Springer.
When astronauts launch into space, a microbial entourage follows. And the sheer number of these followers would give celebrities on Twitter a run for their money. The estimate is that normal, healthy adults have ten times as many microbial cells as human cells within their bodies; countless more populate the environment around us. Although invisible to the naked eye, microorganisms – some friend, some foe – are found practically everywhere.