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Sustainability (page 166)

(Shutterstock)

Pete Danko - Earth Techling

(Nickolay Stanev/Shutterstock)

(Patrick Foto/Shutterstock)

ELF fire at Superior Lumber, from the 2011 documentary "If a Tree Falls." (Roy Milburn)

Cyclone Phailin over the Bay of Bengal on 11 October 2013. At the time the image was taken, Phailin was a violent Category 4 equivalent tropical cyclone with 1-min winds peaking at 250 km/h (155 mph) and a central pressure of 940 millibars. (Wikimedia Commons)

(Darren J. Bradley/Shutterstock)

(Screenshot, Science Fair Nightmare)

(Media Matters)

(Malgorzata Kistryn/Shutterstock)

(Mikey Q./Tumblr)

(Andriano/Shutterstock)

(Wikimedia Commons)

Thanyarat Doksone

(Vaclav Volrab/Shutterstock)

(PhotoStock10/Shutterstock)

(Anna-Julia/Shutterstock)

(Tom Wang/Shutterstock)

Washing clothes in the Laundry Pod (Screenshot, StoreBound)

(Tina Case/Rex Usa)

(Wikimedia Commons)

(jo Crebbin/Shutterstock)

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