How to preserve food for doomsday?

Doomsday is a situation no human would want to be in. It is basically a day when human life will be extinct and there are many possible reasons for it. There are multiple scenarios that could lead to this day. Some of them are:

  • Asteroids:with an estimated number of 1400 asteroids which are under an observation by NASA could severely affect the Earth’s surface because of their vast size. The only good thing about them is that they are predicted not to affect the Earth for at least 100 years. But, that does not mean that it will not. There is a high chance that asteroids will be the thing that will make the life on earth end.
  • Global Warming: Human lifestyle is forcibly changing the climate; even despite the fact that it is going to affect human life itself. Be it increase in temperature that can soon make