Of the other discovered allotropes, carbon nanofoam is a ferromagnetic allotrope discovered in 1997. It consists of a low-density cluster-assembly of carbon atoms strung together in a loose three-dimensional web, in which the atoms are bonded trigonally in six- and seven-membered rings. It is among the lightest known solids, with a density of about 2 kg/m 3 .  Similarly, glassy carbon contains a high proportion of closed porosity ,  but contrary to normal graphite, the graphitic layers are not stacked like pages in a book, but have a more random arrangement. Linear acetylenic carbon  has the chemical structure  -(C:::C) n -. Carbon in this modification is linear with sp orbital hybridization , and is a polymer with alternating single and triple bonds. This carbyne is of considerable interest to nanotechnology as its Young's modulus is forty times that of the hardest known material – diamond. 
Sodium lamps have the worst color rendering of any bulb. They produce a dark yellow glow which is generally a very low quality light. Additionally, there are serious waste disposal issues with sodium lamps. In particular, they have been known to start fires in the event that the lamp is broken and the sodium metal is exposed. The sodium can catch fire even in the event that the lamp is broken on the ground. For this reason it is safest to break sodium lights under water and then to subsequently dispose of the destroyed bulb. Lastly, HPS and LPS lights are monochromatic, so they can mess with your color vision if you look at them for an extended period of time.
It is obvious that the point if the article is not to focus solely on the scientific evidence of benefit that music education has on the brain, though that makes a good argument as well. I appreciate that this author suggests that music stands on its own two feet and is part of the human condition. Music is in our culture and our surroundings in numerous ways. When we don’t become musical beings, even to the mildest degree, we alienate ourselves from much of the cultural ritual and tradition that defines our nation’s fabric. Can you sing the national anthem? Can you sing along in church? Can you join in music-making at the holidays? Can you discriminate between quality, sophisticated, artful music and mediocre fluff that is made only to make a quick buck? Do you understand the ways in which music was/is used in cultural identification and participation? I could go on and cite hundreds of sources from the ethnomusicological and psychological standpoint but the point is that music is a part of life and should not be left out of the human experience. If and when it is, it will truly redefine us as a people who care more about numbers, data, competition, success and failure instead of beauty, community, tradition and historical identity. The arts tell a story and allow us to keep doing the same. I don’t need scientific data to prove that.