This enormous research center has been in the news a lot lately because of its role in finally observing the pesky Higgs Boson particle. Its most famous feature is the Large Hadron Collider, the biggest, most high-energy particle accelerator in the world. Inside this collider, particles are revved up to speeds close to the speed of light and smashed into each other, so scientists can observe the fallout. How cool is it we have built a tool on our humble planet that can recreate the conditions of the early Universe? Answer: the absolute coolest.