This time of a global health crisis,  Marta Olazabal, BC3-Basque Centre for Climate Change Research Fellow and AXA Research Fund Postdoctoral Fellow, and Sarah Colenbrander from World Resources Institute, write an opinion article on climate change and the COVID-19 crisis and how this can be addressed in cities.Olazabal and Colenbrander's article deal with the critical point that this situation cost to cities and the new investment to handle it.