This unassuming house runs on a 100% hydrogen for domestic heating and cooking.

这座不起眼的房子使用100%氢气进行家庭取暖和烹饪。

Eastern European states came out worst, largely owing to the burning of coal for domestic heating, along with Italy, where industrial pollution in the Po Valley was identified as a key problem.

东欧国家的空气污染最严重，主要是因为这些国家燃烧煤炭以供家庭取暖，意大利的空气也很糟，波河峡谷的工业污染是罪魁祸首。