THE THREE CAUSES OF SMOG:

Science Illustrated - - TECHNOLOGY -

Traf­fic pol­lutes cities

… but ef­fi­cient par­ti­cle fil­ters and new cleaner trans­port tech­nolo­gies save city mo­torists.

Coal is the #1 killer

… and deny­ing this won't change it. Yet while govern­ments dither, in­dus­try moves ahead with bet­ter tech.

In­dus­try emits haz­ardous sub­stances

… but hov­er­ing smog pu­ri­fiers con­vert the toxic fog into fer­tiliser and pure drink­ing wa­ter.

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