Revelation 8:12 And the fourth angel sounded, and the third part of the sun was smitten, and the third part of the moon, and the third part of the stars; so as the third part of them was darkened, and the day shone not for a third part of it, and the night likewise.
The increased darkness would likely have great effect on crop production on this earth as we know it to be. Thus great famines would likely be as never seen before.
Jesus makes it clear to us in Bible that we really don't want to be here on this earth when these things happen.
Luke 21:36 Jesus says: Watch ye therefore, and pray always,
that ye may be accounted worthy to escape all these things that shall come to pass, and to stand before the Son of man.
Revelation 8:13 And I beheld, and heard an angel flying through the midst of heaven, saying with a loud voice, Woe, woe, woe, to the inhabiters of the earth by reason of the other voices of the trumpet of the three angels, which are yet to sound!
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