A promotional video for my website

I need a compilation video of still images and video clips from the Beyond COP21 Symposium series to promote the series further and get more schools to sign up. There is already quite a lot of content on the internet but I also have a number of short videos from individual events. The length of the video should be approx. between 4 minutes.

It will be on the following page- https://www.beyondcop21symposium.org/about/ which I will edit once the video is complete.

I really want the video to reflect its global nature, as well as focus on images and video clips that show the student engagement/reflections as well as the hands-on nature of each event.