25zero is a mountaineering project, tracking equatorial glacial melt and raising awareness of the impacts of climate change, led by explorer Tim Jarvis AM. The project was founded in 2014, and focussed on bringing live footage from the peaks of three mountain glaciers to the 37,000 delegates at the COP21 summit in 2015 in Paris, France, as a way of showcasing the impact of global warming on vulnerable and remote areas.
In 2016 the 25zero project grew into a documentary film production, with a broader focus on both the glaciers themselves and the communities that live near them. The resulting 15-minute short film, entitled 25zero//East Africa, was released in 2019.