A2 - The need of multiscalar policies for sustainable development

"In order to meet challenges, multiscalar policies are required.
We need a global impulsion in order to determine the limits to respect in the global use of energy, the emission of green house gases or the use of chloric gases which destroy the ozone layer.
Large scale policies have to be launched in order to struggle against acid rains and extensive zones of aerial pollution, or avoid the pollution of coastal waters and inland seas.
Nation states have to enact the laws and regulations which are necessary to control land uses or limit the emision of pollutants.
Local authorities have to apply global recommendations and national laws and adapt them to the specific conditions of place, landscape and people."

(This is an excerpt from the text by Professor Paul Claval “NEW STRATEGIES FOR MANAGING LANDSCAPES AND STRENGTHENING IDENTITIES AS TOOLS FOR A SUSTAINABLE DEVELOPMENT”)