The ice has preserved many similar items, but the unfrozen life of these artifacts is short.

NPR: History Emerging from the Ice

It provides long and fertile planting seasons on large expanses of unfrozen land essential to feed 8 billion to 9 billion people around the world.

FORBES: Magazine Article

Captain America faded after the war and, after a brief revival to fight the communists, disappeared until he was unfrozen from a block of ice in 1964.

ECONOMIST: Just in time for the 4th of July

"Despite the obvious logistical challenges of investigating trades involving offshore accounts, we moved swiftly to locate and freeze the assets of these suspicious traders, who now have to make an appearance in court to explain their trading if they want their assets unfrozen, " said Sanjay Wadhwa, senior associate director of the SEC's New York Regional Office.

WSJ: SEC Freezes Swiss Account Used in Trades Ahead of Heinz Deal