The "Doomsday Clock" symbolizes the end of the world and for the last three years, it's been stuck at three minutes before midnight, which is doomsday.

The closer the clock's hands are to midnight, humanity is closer to an imminent disaster that can end civilization as we know it.

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The last time the hand was adjusted was in January 2012 when it was moved forward one minute and stayed there for three years at 11:56 p.m. The looming concern about a nuclear meltdown at Japan's Fukushima's power plants led to this one minute advance in 2012 along with the new strain of the airborne H5N1 flu virus.

The Bulletin of Atomic Scientists (BAS), the clock's keepers, said the clock will be adjusted once more and the hand will inch closer to midnight by one minute which. The clock will read 11:57 p.m.

This official and final announcement will be presented at an international news conference on Thursday at Washington D.C.

The role of the BAS is to observe possible threats to humanity such as nuclear fallouts and danger from omnipresent climate change. Other than these major factors, the BAS will also assess terrorism and nuclear modernization and technology.

This is also a pivotal announcement as the BAS hinted it will release an official statement about 2015. This could be the decision to move the hand of the clock forward by a minute due to current global threats and trends.

For this year though, trends pointing towards humanity's destruction include bioweapons that might lead to another world war and an asteroid collision.

Bioweapons can now be produced from artificial viruses developed for medical purpose. These can be used  also as weapons of mass destruction. NASA also says an asteroid impact in 2015 can lead to this doomsday time adjustment.

World War III is also a cause for concern as financial experts believe another global war is right around the corner due to Vladimir Putin's actions in Ukraine and his claim to own the Arctic's oil reserves. Global oil reserves will run out by 2060.

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