There’s been a lot of talk about “Clean coal technology” during the election campaign in the United States.  Both the Democratic and Republican nominees want to place it at the forefront of their energy independence strategy.  If he’s elected, John McCain pledges to speed up its development with a $2 billion a year investment until 2024. Barack Obama wants to build “five ’first-of-a-kind’ commercial scale coal-fired plants with carbon capture and sequestration.”

Essentially, McCain and Obama want power station smokestacks to grab the carbon dioxide (CO2) they emit when they burn coal.  The CO2 would be transported to a storage site via pipelines, ships, rail or trucks.  There it would be injected into rock formations deep below the Earth’s surface.  Since the U.S. is the world’s second largest emitter of CO2 emissions after China, the technology would reduce air pollution substantially.

http://www.globe-net.com/other_news/listing.cfm?type=2&newsID=3832

and how would the prevent the buried CO2 from escaping into the atmosphere

whats worse sending it deep into the groud or in the air?

we have the technoology to switch to energy sources that don’t produce CO2. and transporting CO2 to burial sited by trucks, trains, etc also produce CO2