What is the fine-grained topic of the following text: "During the post cap-and-trade years, out of 2,502 grants reviewed, not a single grant was awarded for work focused on developing and promoting nuclear energy, and only $1.3 million was granted to support work on carbon capture and storage," states the paper published in the journal WIREs Climate Change. Only return the topic.
Funding for nuclear energy and carbon capture projects in post cap-and-trade years