Priscilla Barrera explains there are two major sides of what is destroying the Earth, which are humans and natural forces. Her view is toward the natural forces that cause damage to the Earth. As well as, her writing about how scientist and astronomers study these instances during the 1800s. For instance, “Sir William Herschel stated, the number of sunspots would be indicative of the amount of the Sun’s energy that is received by the Earth. That energy would affect the amount of wheat produced which would affect the price. The two natural causes that dominate the conversation are solar changes and changes to the Earth’s orbit. An example would be how the Sahara was once rich grassland and now a desert. Coupled with, the Earth’s orbit varies