Ключевые слова: air quality, atmosphere, biodiversity, biofuel, biosphere, carbon, carbon footprint, carbon neutrality, climate change, climate science, conservationism, deforestation, desertification, earth science, earth system, ecological footprint, ecology, ecosystem, environment, environmental policy, geology, geothermal energy, global warming, greenhouse, heat index, hydrology, hydropower, icon, infrared radiation, line, meteorology, natural world, oceanic currents, oxygen, pollution control, rain cycles, renewable energy, seasons, sign, solar energy, storm systems, sustainability, temperature, the elements, thermal regulation, ultraviolet rays, waste management, weather, wind patterns,