I found a nice article that dealt with the possibility of an asteroid hitting Earth and wiping out human life similar to what happened to the dinosaurs many years ago. In this article, Andrew C. Revkin asks Apollo 9 astronaut Russell L. Schweickart about human survival in the case of an asteroid approaching the planet since we just had a small one dissipate over Siberia. They discuss that we have the means to detect when something is about to collide with the earth and have the technology to take care of the threat but they brought up one major problem. We humans are scattered across the globe and belong to different tribes that do not get along and decide on issues mutually. They discussed that we would have to give up all differences to take on the threat and also pull resources together before such a disaster to be able to effectively detect these potential collisions in the future.
I was greatly intrigued by this article because I understand that there would have to be a world threatening disaster to make the human race work together because normally we are to self-centered to care about anyone but ourselves. I would suggest reading the whole article because they brought up some good points.