What technological controls were implemented to reduce both of these gases in the us?

In the U.S., technological controls to reduce greenhouse gas emissions, particularly carbon dioxide (CO2) and methane (CH4), include the implementation of cleaner energy sources such as wind, solar, and natural gas, which emit less CO2 compared to coal. Additionally, regulations such as the Clean Air Act have led to the adoption of more efficient industrial processes and the installation of carbon capture and storage (CCS) technologies. For methane, improvements in leak detection and repair (LDAR) practices in oil and gas operations have been critical in minimizing emissions. These measures collectively contribute to reducing the overall greenhouse gas footprint.