"Nearly 50% of the land surface has been transformed by direct human action, with significant consequences for biodiversity, nutrient cycling, . . . and climate." - Global Change and the Earth System.
"Kwalomu ka 50 wa tiphesente ta misava ti cinciwe hi swiendlo swa vanhu naswona sweswo swi khumbe xiphemu xa pulanete lexi swilo hinkwaswo leswi hanyaka swi tshamaka kona, . . . maxelo ni ndlela leyi swimilana ni misava swi tirhisanaka ha yona." - Global Change and the Earth System.