The Earth’s climate system behaves in ways that make it challenging for people to fully anticipate and understand the long-term consequences of their decisions. We straddle the fence between science and policy to make it all more accessible to those who are making decisions about our future.

The long lifetimes of some greenhouse gasses, the feedback loops within the Earth’s climate system, and ‘bathtub’ dynamics of the climate, where greenhouse gas concentrations rise as long as emissions are higher than removals to the biosphere, all make it challenging to mentally project the outcomes from specific policy choices. And with emissions coming from diverse countries and sectors, it is challenging to ‘add-up’ the pledges and commitments of countries to understand the likely impacts on the whole climate. Our climate models, tools and analysis are designed to help people understand, through interaction and exploration, what speed and scale of reductions in emissions will work to meet climate goals.

“For the first time, with C-ROADS, we have a way to capture on the spot the implications of the key decisions that will be made around the follow-up to Kyoto, with sobering and powerful results.”
-Jacqueline McGlade, Executive Director, European Environment Agency


  • C-ROADS – A tool to test different climate mitigation scenarios for up to 15 different regions of the world simultaneously.
  • C-learn – Like C-ROADS, but web-based and slimmed down for introducing people to the analysis of climate policies.
  • Climate Scoreboard – A widget that reflects the latest national commitments put forward to reduce greenhouse gas emissions.
  • World Climate – A mock-climate negotiations exercise to learn about the negotiations and how we can address climate change.
  • Climate Momentum Simulation – Simple interactive climate dynamics model.
  • Multisolving – Tools to understand the health, economic, and social benefits of the transition away from fossil fuels.

…other climate tools available on our simulations page.