Scientists say although 2015 saw events such as the Iran nuclear agreement, these were overshadowed by worrying trends such as heightened global tensions and the threat of climate change.
Doomsday Clock Status, Global Threat Maintained
The Doomsday Clock, the virtual countdown to possible global catastrophe, has been kept at three minutes to midnight. Image: The Doomsday Clock has been left on three minutes to midnight (AAP)
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