She has used a clean stove for two years , she said , and she plans to buy another . Worldwide , nearly 2 million premature deaths each year are linked to indoor smoke . Comment: In Tanzania , they 're producing `` clean cookstoves '' that emit far less smoke , fewer pollutants .
Worldwide , nearly 2 million premature deaths each year are linked to indoor smoke . Comment: In Tanzania , they 're producing `` clean cookstoves '' that emit far less smoke , fewer pollutants .