the 1st crisis that the city has faced in its practically 4000 years history. alexandra cash. rachel kaiser, climate change adaptation expert at the european environment agency and joins us from copenhagen. denmark, august. alexander, we heard about a plan to build more green spaces in athens. a little bit of grain can go a long way, but what else can be done in cities to adapt to these high temperatures? that's and on and many thanks for then the invitation. indeed, the green spaces and the urban greening can substantially reduced temperatures in cities. but it's not the only solution. and when we look at the built environment, our sir europeans, we spent 90 percent of our time in building. so it's really important to make sure that they are climate proof. for example, through screening, all shading south facing windows, through improving the installation of buildings through providing a light color, the white walls and roofs that reflect a lot of their sand race, heating them and prevent them from, from a heating or providing sustainable cooling, such as passive cooling or districts cooli