In our first year working towards this project we will be allowing all our challenge participants the option to offset the emissions produced by the international flights in their trip - which are by far the most carbon-heavy element of their trip. Then, in 2021, we're going to be offsetting all our trips, by default. In addition, we'll be planting trees to offset our staff travel, and working with our in-country partners in each of our destination countries to ensure that the ground arrangements for all of our challenge events are offset as well.