US releases unseen footage of nuclear tests

The US has begun to declassify and release thousands of films of above-ground nuclear tests unseen for decades. Scientists say the newly released films offer a more accurate measurement of the power of nuclear blasts.

The US has begun to declassify and release thousands of films of above-ground nuclear tests unseen for decades.

Scientists say the newly released films offer a more accurate measurement of the power of nuclear blasts.

Al Jazeera’s Tom Ackerman reports from Washington, DC.