Europe's cities emit huge amounts of greenhouse gases into the atmosphere. Two essential urban services – waste incineration and wastewater treatment – are among the biggest contributors to municipal CO2 emissions in the EU.
Michael Allen is a page one enterprise editor at various esteemed publications. He specializes in themes such as aviation and aerospace, climate change and environment, as well as sustainability, with a focus on topics including cleantech, renewable energy, and space travel. His work has been featured in notable outlets including Medium, The Wall Street Journal, Popular Science, and Foreign Policy.














