- Sustainable (business, energy, resources)
- Recycle (Recycling)
- Carbon footprint (carbon offset)
- Household chemicals (cleaning supplies)
- Locavore (eating local foods)
- Renewable energy (solar, wind, water)
- Global warming
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- Renewable
- Climate change
- Climatology
- Conservation
- Composting
- Vegetarian
- Biodegradable
- Organic (farm, garden, food, clothing)
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- Eco-friendly
- Environmentally friendly
- Sustainable building
- Natural foods
- Slow food (slow food movement)
- Fuel-efficient (hybrid)
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