How would you like, life on Earth to end?

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I know we don't want life on Earth to end, but soon it will come to all of us and there's nothing we can do. (Of course movies says otherwise) I am a fan of Discovery Channel and National Geographic Channel. In this two "science channel", they shown several possibilities that might be the cause of a global phenomenon that might kill all living things on this planet. Here are some of those possibilities that might kill us all. 1. Sun emitting huge Cosmic clouds and ht the Earth 2. Sun died 3. Asteroid hitting the Earth 4. Biological disease that can easily spread and kill living things 5. Global Warming 6. Alien invasion. Well, my personal favorite is Alien invasion where I can fight back and kill some aliens. :o