And toilet paper's no exception ... RELATED VIDEO: This Eco Artist Turns Litter Into Landscape Paintings: 'We Can Be Better, More Sustainable Humans' So why make the switch?

One million trees worldwide are cut down each year to make toilet paper. Is it more sustainable to grow your own? In Meru, a town in eastern Kenya, a lush, leafy plant sways over the landscape.

Certain toilet paper, tissue and office paper brands are ... Miles and miles of the trees blanket the landscape like “green deserts,” as some Portuguese say. But it’s not the only nation ...