Both the Kyoto protocol in 1997 and the Paris agreement in 2015 contain commitments to reduce GHG emissions to limit the impact of global warming. However, there are huge hurdles to overcome to reach those targets. As regulators and consumers are pushing companies to better monitor their environmental impact, we view the ability to improve the measurement and monitoring of GHGs as one of the great challenges. Hardware- and software-based solutions are now creating the means to do this more cheaply, reliably and frequently than before. In particular, we have identified  emerging deep-tech companies with expertise in asset observation that are leveraging technological advances in the satellite ecosystem.