Green roofs date back to before the time of the Vikings . Not just aesthetic , they help fight against climate change , especially in cities . Comment: Majora Carter says green roofs can help alleviate the problems caused by storm water . The first green roof was built by a German engineer named Hans von Ohain who wanted his house to be as cool and comfortable for people living there as it is now. Supporters say government support is need to spur growth elsewhere .
Green roofs date back to before the time of the Vikings . Not just aesthetic , they help fight against climate change , especially in cities . Comment: The first green roof was built by a German engineer named Hans von Ohain who wanted his house to be as cool and comfortable for people living there as it is now. Supporters say government support is need to spur growth elsewhere .