The so-called War on Terror launched by the United States government in the wake of the Sept. 11, 2001 attacks has cost at least 801,000 lives and $6.4 trillion according to a pair of reports published Wednesday by the Costs of War Project at Brown University's Watson Institute for International and Public Affairs.

"The numbers continue to accelerate, not only because many wars continue to be waged, but also because wars don't end when soldiers come home," said Costs of War co-director and Brown professor Catherine Lutz, who co-authored the project's report on deaths.

"These reports provide a reminder that even if fewer soldiers are dying and the U.S. is spending a little less on the immediate costs of war today, the financial impact is still as bad as, or worse than, it was 10 years ago," Lutz added. "We will still be paying the bill for these wars on terror into the 22nd century."