News headlines always seem to be full of celebrity dirty washing or natural disasters of one kind or another from around the world, we have reality shows focussing on the negative aspects of life such as Benefits Street or Undateables and it seems people can't get enough of it. According to Psychology Today our obsession with bad news and disaster is down to our brains being hard-wired for bad news because our caveman ancestors had to look out for the negative things around them just to stay alive.