April 22nd, National Earth Day campaigns around the globe promote ways to save the Earth. The organizers promote events educating public about a variety of subjects including: climate change; air pollution; water pollution; erosion; recycling; composting; renewable fuels and power; carbon footprints; efficient cars; rain forests; ecosystems. We can take actions protecting the Earth, its creatures and their habitats. Polluted sky above an urban jungle of skyscrapers.