- This skyscraper-sized air purifier is the world's tallest - The tower is about as tall as a 20-story building. https://www.nbcnews.com/mach/science/skyscraper-sized-air-purifier-world-s-tallest-ncna858436 8 comments technology
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- 366 of China's Cities Don't Have Safe Air: Greenpeace http://www.nbcnews.com/news/china/366-china-s-cities-don-t-have-safe-air-greenpeace-n500261 4 comments
- World's tallest offshore wind turbine will tower over iconic buildings https://www.nbcnews.com/mach/science/world-s-tallest-offshore-wind-turbine-will-tower-over-some-ncna853596 3 comments
- Most Americans Live in Areas With Unhealthy Levels of Air Pollution, Study Finds http://www.nbcnews.com/science/environment/most-americans-live-areas-unhealthy-levels-air-pollution-study-finds-n559076 3 comments
- China Issues National Red Alert Amid Heavy Smog http://www.nbcnews.com/slideshow/china-issues-national-red-alert-amid-heavy-smog-n703121?cid=sm_fb 0 comments
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