Relative to most other forms of energy, windfarms have a pretty minimal environmental impact, with the deaths of birds and bats generally capturing the most attention. But as a new study of their effects points out, various studies have found that turbines can modify the “transfer of energy, momentum, mass, and moisture within the atmosphere.” After looking at satellite temperature data, the authors of the study conclude that all this transferring has a notable impact: areas containing wind turbines have been seeing their night-time temperatures warm up.

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