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Music can have extraordinary affects on the human brain. Looking in on "ear worms" (meaning getting a song stuck in your head), research reveals that what's going on is neural circuits getting stuck in a repeating loop, playing the thing repeatedly in the head. It is also found that, in the process of human evolution, the structures that respond to music in the brain were first to evolve than the structures that respond to language. Further research also looked into the brain's response to musical pleasure, and animals' response to beats.

Although cloning a mammoth would be fascinating, it is not needed nor is it necessarily possible. Scientists have hopes to clone a mammoth because of the recent frozen mammoth find in Russia. This mammoth appears to have blood that does not freeze, increasing hopes to find live cells. However, some researchers argue that finding a living cell in the body of the mammoth is not possible. They say that at most, they will find a cell with DNA that is intact enough to use to clone the creature. However, ancient DNA is almost always fragmented, and would therefore, not be able to be used in the cloning process. Doubts also circulate around the idea that the mammoth's blood was able to withstand -17 degrees Celsius without freezing. The sample found may have been under special conditions to allow the blood to remain unfrozen. With the trouble it would take to clone a mammoth, it is not worth it. Scientists can learn more about mammoths through the fossil record rather than from a cloned animal. 

Major environmental devastation is the direct result of human activities. Through the burning of fossil fuels, humans are unintentionally producing acid rain. The sulfur dioxide and nitrogen oxides released from the fossil fuels mix with water, oxygen, and other substances in the atmosphere to create consequential solutions that are spread over miles. Some negative effects of acid rain include aluminum absorption in water (making a toxic environment for aquatic animals), disruption of the food chain (aquatic deaths result in bird deaths, etc.), the robbing of essential nutrients in soil (kills trees), and the deterioration of vegetation's ability to withstand extreme conditions. In order to prevent ecological disaster, it is required that humans stop the burning of fossil fuels. Governments have attempted to use an alternative source for energy, but the harmful effects of the fossil fuel use have yet to wear off. By the conservation of energy, individuals can help stop the destruction of the planet.