Has the world always been imperfect? Through the scriptures we know that God created the world and the species and saw that it was good.

He also created us and we were good in the beginning. Before Adam and Eve ate from the tree, we were not capable of doing evil. We were in some way, perfect beings as well.

Was the world (and I guess therefore the universe as well) perfect in the beginning? Didn't it suffer from any natural disasters such as earthquakes, tornadoes, storms...?
The earth was indeed perfect at creation. In fact, the Hebrew word for good (towb) used to describe God's creation pre-sin is the same word used to describe the goodness of God in the Psalms:


Gen 1:31 ESV And God saw everything that he had made, and behold, it was very good. And there was evening and there was morning, the sixth day.

Psalm 25:8 NIV Good and upright is the LORD: therefore will he teach sinners in the way



The first creation was perfect, but when Adam sinned, everything died. The ground became cursed:


Gen 3: 17-18 ESV And to Adam he said, “Because you have listened to the voice of your wife and have eaten of the tree of which I commanded you, ‘You shall not eat of it,’ cursed is the ground because of you; in pain you shall eat of it all the days of your life; thorns and thistles it shall bring forth for you; and you shall eat the plants of the field.


Thorns and thistles came when there were none. Pain and death came. Before sin there was no death, but climate and storms are another matter. Is a tornado or storm that causes no pain still a natural disaster? I'd think it'd just be weather.