Energy 

There is a major problem the world is facing. The worlds main source of energy is oil and coal. Our oil and coal supply will run out very soon. The burning of oil is also hurting our environment. The burning of oil and coal is damaging the environment in every part of the world. This makes it a global concern. If we keep damaging the environment that we live in, soon we won't have any safe place to go to. Just like its a global concern, the whole world has to try and come together to improve the environment.