East Coast power plants will bid on CO2 permits Sept. 25.
The campaign argument could be decided by which group of voters shows up at the polls.
A call to examine the age-21 threshold has sparked heated debate on campuses.
The Democratic nominee delivers strongest case yet against McCain campaign, prods Americans to change the direction of the country.
But in 2004, Bush got only 2 points; Kerry, 0.
Cindy McCain's past is the latest to be questioned after errors were found.
MIT students hack into Boston's transit system, highlighting security flaws in mass-transit cards.
Pressure mounts on colleges to reduce barriers for that pool of talent.
They call for a special session of Congress, but many are skeptical the session will get off the ground.