On Carbon Containment examines alternatives to renewables and nuclear energy for CO2 emissions reduction. The chapter begins with an explanation of the global carbon cycle. Then follows a discussion of current biomass and biofuel practices, concluding that they are not carbon neutral without carbon capture. Carbon capture and sequestration are detailed, emphasizing their importance in decarbonizing fossil fueled plants. The difficulties of direct air capture due to the low atmospheric CO2 concentration are pointed out. However, biofueled plants coupled with carbon capture and sequestration are shown to offer the unique prospect for reducing atmospheric CO2 concentration.