"The Origins of the Universe: A Crash Course" by Brian Greene.

Eight billion dollars spent on a machine that could possibly create a black hole that has the potential to engulf the entire Earth. One may ask themselves, what has such potential, the answer: the Large Hadron Collider. The collider is located 300 feet below France and is a circular 17-mile track. When on, trillions of protons reach speeds around the speed of light, and partake in about 500 million head on collisions. These head on collisions at such high speeds causes a large amount of energy released. This also could cause (and this is the purpose of the collider) the creation of new particles that have never been known. These particles include, Higgs, Supersymmetric, and Transdimensional Particles, as well as the uncertain side effects of Micro Black Holes.
After presenting a brief description of the particles, I am going to explain some of the uncertainties about these particles, and see if the 8 billion dollars spent on this project is scientifically worth it. The Higgs Particles are the particles that make up a so-called molasses field that is responsible for mass. The collisions in the collider are thought of to be able to create these particles from the collisions and thus would be used for the completion of he standard model of the Higgs Particles. This would be a great advancement in science and could lead to many new and great discoveries, and thus I believe that this is a good start to the rationale of the money spent.
The second particle is the Supersymmetric Particle. Although they have never actually been detected, it is said that they the collider will have the power to create these particles that would be described as a monumental achievement that takes us beyond Einstein's theory, and catapulting us to a deeper link between nature's forces and particles of matter, so the article says.
The third particle is the Transdimensional Particle. Einstein always believed that there was a fourth dimension of space that was unable to be detected, and the collider is said to possibly hold the power to find that fourth dimension. This would be done by the debris of the protons colliding into one another being 'thrown' out of the normal dimensions of space and into an unknown one. If this were discovered, Greene says, "It would rank as one of the greatest upheavals in our understanding of the universe."
The side effects that could occur include micro black holes. This is a massive astrophysical body with enormous gravitational fields that in size, is comparable to the size of an orange shrunken down a billionth3 times. This is bad because it could engulf part of the country of France, all of Europe, or the entire Earth. Although this is extremely unlikely, it could happen.
Even though I have said that all of the particles provide a great deal of information that would be very beneficial to science, there is really no certainty that any of this is going to work, let alone the extreme negatives that could occur. Hopefully, there will be extreme caution in the use of the Large Hadron Collider, and there will be some amazing discoveries that will launch modern day science beyond the level that it is and especially beyond the level that Einstein ever could have imagined.