Ключевые слова: air pollution, carbon footprint, climate change, cycling, cyclist, ecology, emissions, energy industry, environment, environmental awareness, environmental concerns, environmental health, environmental impact, environmental issue, factory, fossil fuels, health risk, industrial emissions, industrial plant, industrial pollution, industrial skyline, industry, outdoor, pollution, pollution control, power plant, silhouette, skyline, smoke, smoke plume, smokestacks, sustainability challenge, toxic, transportation, urban scene,