I guess everyone has to be somewhere……
Check it out:

Thousands of people, including actors and politicians, marched today in cities across the world to encourage world leaders to take greater action on the issue of climate change. The United Nations Climate Summit is set to begin in two days.

From AP:

The march was one of a series of events large and small held around the world — organizers said 40,000 marchers took part in an event in London, while a small gathering in Cairo featured 50-foot art piece representing wind and solar energy — two days before the United Nations Climate Summit. More than 120 world leaders will convene Tuesday for the meeting aimed at galvanizing political will for a new global climate treaty by the end of 2015.