There are millions of asteroids orbiting the solar system most of which are found in the asteroid belt between Mars and Jupiter. Studies of these asteroids, as part of an effort to assess the threats to earth, have allowed us to track and paths, sizes and rotational frequencies of over 1000 asteroids.
In Sunday School curricula, their illustrated Bibles and even famous illustrations and paintings over the centuries, literal interpretations have formed our image of the ecology of the Garden of Eden. But even literalist are not likely to explore the theological implications of the specific features of the Garden of the Eden and are even less likely to ask what the regions outside of the Garden was like and why.
The Toba volcano is found near the center of Sumatra, Indonesia. It has been estimated that at least 2800 cubic kilometers of material was thrown into the air during the explosion or series of explosions. To put that in perspective the Krakatoa volcano threw just over 2 cubic kilometers of material into the air some of which circled the globe causing dazzling sunsets in Europe.