Global warming is causing the ice on Greenland to melt away, which could potentially expose Camp Century (AKA “the city under the ice”). Camp Century, an unused U.S. military base that was used to study the possibility of deploying nuclear weapons from the Arctic during the Cold War, contains a large amount of hazardous waste leftover from scientists.

The scientists thought that the leftover hazardous material would be covered with ice forever but according to new research, the base could be exposed by 2090.

Learning English has more on this discovery:

Melting ice on Greenland could expose an unused U.S. military base that contains hazardous waste, scientists warn.

Camp Century was built in 1959. The base was to study the possibility of deploying nuclear weapons from the Arctic during the Cold War. The Cold War was a period of tension between the former Soviet Union and the U.S. which lasted from the end of World War II to 1991.

The base was closed in 1967. Scientists thought that any hazardous material left at the base would be covered with ice forever. Now, new research suggests the base could be exposed to the environment by 2090.

Read the full story here.