CLEAN : Mayor of Paris welcomes Bloomberg ahead of UN climate conference

The transcript discusses the role of national governments in measuring and improving communities, the importance of global leadership in addressing environmental challenges, and the need for cooperation among cities to tackle pollution. It highlights the significance of leadership in guiding the world towards better solutions and the challenges of achieving political consensus. The text also mentions various conferences and initiatives aimed at environmental renewal.

In what ways can communities come together to improve their situations?

What does the text imply about the expectations of leaders in guiding communities?