In December 2015, to coincide with the COP21 climate change talks in Paris, multiple 25zero teams scaled a number of the 25zero peaks. Jarvis and a core team summited Carstensz Pyramid (4,884 m) in Indonesia, and Mount Stanley (5,109 m) and Mount Baker (4,844 m) in Uganda. Simultaneously, other 25zero teams climbed Mount Kenya (5,199 m), Kilimanjaro (5,895 m) and a number of Ecuadorian peaks. Footage, observations and stories from these climbs were transmitted to a government-endorsed press conference for 25zero at COP21 in Paris.