CLEAN : Rome Paris on foot to raise awareness on climate change

The video discusses a gathering in Paris aimed at reaching a new climate agreement to address the climate crisis. It highlights a challenging journey from Rome to Paris, mostly on foot, which tests both physical and mental endurance. The journey is inspired by the Pope's leadership on environmental issues, carrying his energy and courage throughout.

What is the significance of the climate agreement mentioned in the text?

How does the text describe the physical and mental challenges of the journey?