Throughout history, pandemics have ravaged populations and caused widespread devastation, and with the rise of modern travel and a global interconnectedness, the potential for a deadly virus to sweep across the world is a very real possibility. Diseases such as Ebola, SARS, and influenza have shown just how easily a virus can spread and how devastating the consequences can be. Another popular theory for the end of the world is a natural disaster, such as a massive asteroid impact. It is believed that a sufficiently large asteroid colliding with Earth could cause widespread destruction, potentially leading to the extinction of the human race.
