“With reports that 92% of the world’s population currently lives in places where air quality levels exceed their pollution limits (World Health Organization (WHO)), it’s time to take action. For Berlin-based Green City Solutions, it was the trigger to develop CityTree, a 4-metre-high billboard covered in moss that’s able to filter the pollution of up to 417 cars annually whilst cooling down the surrounding air (and providing Wi-Fi!) We met up with founder Zhengliang Wu to learn more about this multifunctional super tree.”
“Toxic air causes miscarriages, early delivery, and low birth weight. It contributes to the deaths of more young children every year than malaria and HIV/AIDS combined. It can harm the healthy development of children’s brains. It is a drag on economies and societies, already costing as much as 0.3 per cent of global GDP - and rising. And in many parts of the world, it is getting worse.”
“Air pollution (say: po-loo-shun) occurs when gases, dust particles, fumes (or smoke) or odour are introduced into the atmosphere in a way that makes it harmful to humans, animals and plant. This is because the air becomes dirty (contaminated or unclean).”
“Around the world, 18,000 people die every day because of air pollution.
The World Health Organization says the number of deaths attributed to air pollution is 6.5 million a year. That’s more than the number of people killed by HIV/AIDS, tuberculosis and road injuries combined.
In fact, air pollution is the fourth-largest threat to human health, behind high blood pressure, dietary risks and smoking.”
“Urban areas are often huge contributors to climate change due to the high output of greenhouse gas emissions. So what are cities doing to solve this? […]
Paris officials are introducing ‘smart’ trees across the city in a bid to curb air pollution. The trees come from Climate-KIC start-up Green City Solutions and combine air pollution monitors with vertically-installed moss culture to reduce fine dust and nitrous oxides. They’re 275 times more efficient than regular trees!”
“[…] Seoul and Hong Kong are the worst among the cities in our sample. In Europe, London and Paris stand out – daytime pollution there is consistently higher than the WHO’s guidelines. New York and several other American cities have much cleaner air, partly because diesel fuel (which emits more nitrogen dioxide) is less common in the United States. Pollution tends to rise steeply in the morning, and is lowest in the middle of the night. The ebbs and flows during daytime vary across cities. In some, residents may be able to reduce their exposure to pollution by changing their daily routines, such as commuting to work an hour earlier. “
Read more information in the article at theguardian.com!