energy.gov 
RANK Public Topic [top shown]
- 1Diesel fuel
- 1Electric Vehicle
- 1Energy
- 2Energy saving
- 2Models
- 2Natural gas
- 3Electricity generation, Electric power distribution
- 3Energy resources
- 6Alternative energy
- 7World energy resources
- 8Tariff
- 10Interior policy
- 11Off-Road Vehicles
- 14Home Improvement
- 17Renewable energy
- 18Alternative
- 23Global change
- 26Home
- 26Nuclear accident
- 30National security
- 30Nuclear power
- 33Environmental cleanup
- 33Home Repair
- 37Global warming
- 38Coal
- 38Nuclear policy
- 39Emergency incident
- 39Nuclear radiation victims
- 42Emergency Preparation
- 42Picture Ratings
- 45Appliances
- 49Land resources
- 50Petroleum industry
- 52Petrol
- 53U.S. Government Resources
- 55Emergency planning
- 55Environmental Safety
- 59Nuclear weapons
- 60Do It Yourself
- 60System science groups
- 61Home Automation
- 63Publications
- 65Hybrid
- 66Kerosene
- 70Occupational safety and health
- 71Buying Homes, Selling Homes
- 83Government contract
- 85Natural resources
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Significant concepts: 
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982723 distinct domains have been ranked in 2890 public topics.
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