Giving Green offers short-term and long-term recommendations. The long term include clean energy research and lobbying national policy and the short term are verifiable decreases in GHG emissions or increase carbon capture. Short-term recommendations seek to cause immediate, verifiable decreases in GHG emissions (or increase carbon capture). Long-term recommendations seek to make bigger, riskier bets with the hope of changing the long-term arc of climate change. These include avenues such as funding clean energy research, or lobbying national policy. Giving Green is trying to look at these markets and provide people with which they feel most comfortable working with and that make the biggest impact.
See the original piece - an interview with Giving Green co-founder Dan Stein - here.