Sent_en: 2zh The six month study compared the environmental impact, health risks, economic effects and social implications of the use of fossil fuels, renewable energy sources such as wind and solar energy, and nuclear power.
Sent_yy: 这项为期六个月的研究比较了使用化石燃料，风能和太阳能等可再生能源以及核电的环境影响，健康风险，经济影响和社会影响。