Better yet: you burn the plants for energy, then sequester the conveniently high concentration CO2 from the smokestack and do with it whatever you'd think would

Better yet: you burn the plants for energy, then sequester the conveniently high concentration CO2 from the smokestack and do with it whatever you'd think would be smart to do when burning fossiles. About the Science article: my quick skim stumbled over the word "regenerate", which tells me it's not about some material suggested for permanently binding the carbon, but about a tool to get from smokestack-level CO2 concentrations to even higher levels?