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Consolidated Statements of Operations (Unaudited) (USD $)
 3 Months Ended
Mar. 31, 2013
Mar. 31, 2012
REVENUE    
Artifact sales and other $ 803,072 $ 54,147
Exhibit 60,000 25,000
Expedition   2,820,605
Total revenue 863,072 2,899,752
OPERATING EXPENSES    
Cost of sales - artifacts and other 145,701 34,189
Marketing, general and administrative 2,791,321 2,356,918
Operations and research 5,733,233 5,151,706
Total operating expenses 8,670,255 7,542,813
INCOME (LOSS) FROM OPERATIONS (7,807,183) (4,643,061)
OTHER INCOME (EXPENSE)    
Interest income 2,699 22,440
Interest expense (1,071,055) (985,329)
Change in derivative liabilities fair value (662,410) 123,069
Other 23,312 1,082
Total other income (expense) (1,707,454) (838,738)
INCOME (LOSS) BEFORE INCOME TAXES (9,514,637) (5,481,799)
Income tax benefit (provision) (150,742)  
NET INCOME (LOSS) BEFORE NON-CONTROLLING INTEREST (9,665,379) (5,481,799)
Non-controlling interest      
NET INCOME (LOSS) $ (9,665,379) $ (5,481,799)
NET INCOME (LOSS) PER SHARE    
Basic and diluted (See NOTE B) $ (0.12) $ (0.08)
Weighted average number of common shares outstanding    
Basic and diluted 77,344,388 73,165,136