Today’s wind turbines have colossal blades that spin at speeds of more than 200mph (320 km/h).
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/turbines-without-blades-firm-unveils-radical-pole-design-claims-be-quieter-and-safer
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/daily-mail-united-kingdom
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/science-and-technology
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/energy
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/wind-energy
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/renewable-energy
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/spain