Life on earth is about 6 billion years old and during these 6 billion years there were five events which changed the dynamics of the whole planet. The last event happened around 60 millions year ago which killed Dinosaurs and many other species around the globe.
Now scientist believe that another event may happened which will against change the dynamics of the world. For the past events the animals were not able to prepare, but this time human have the ability and can prepare to save itself from complete destruction.
But Jorren lemberg from Sweden claims that these are just rumours with no bases. He said there are problems with our system but there is no major threat.