Large cities, and with them the lives and assets of billions of citizens around the world, are increasingly at risk from the effects of climate change. Large cities are increasingly vulnerable to possible disasters caused by global warming, which is why they already require concrete measures , eight of the ten most populated cities on the planet are located near a river or the sea and are already exposed to risks such as floods, earthquakes, typhoons, and poor infrastructure. The risk is especially worrisome in East Asia. Disasters such as the 2004 tsunami , Cyclone Nargis in Myanmar or typhoon in the Philippines are some of the examples of the fragility of this area.

Likewise, another of the effects of climate change, the rise in sea level, could also have serious consequences, they estimate that for every meter that rises, there is a 2% loss in gross domestic product (GDP) due to consequences such as fresh water scarcity, damage to agriculture and the fishing industry, interruption of tourism or reduced energy security.

However, those responsible for many institution ones International is ensure that if appropriate measures are taken, the consequences can be minimized . Therefore, many report s offers n a test that evaluates and know the weaknesses of a city while define what specific strategies should take local institutions before it is too late.

The book literally incorporates and transcribes interviews that have been conducted between 2005 to 2014 with experts on the environment and climate change.