What technologies are needed to reduce carbon dioxide?

NPR: With or without a new treaty this month, the effort to curb climate change has accelerated since the 1997 Kyoto conference. Although the United States never ratified the Kyoto Protocol, numerous efforts are under way in the States to... More... Archived source: https://web.archive.org/web/20100114024408/http://www.spacetimeandtheuniverse.com:80/general-physics/3206-what-technologies-needed-reduce-carbon-dioxide.html