Use these Warnings from Nature to Avoid Emergencies or Disasters

Be careful if your sidewalk is shiny!

When sidewalks appear to be shining or have a slight gloss, it may be a good indication that you should step very carefully. Glossy sidewalks generally mean that there is some black ice build-up. This ice is incredibly dangerous and could cause cars and people to go sliding into things. So when you see a sheen, perhaps take an alternative route.