Four asteroids on course to make a collision with Earth?

As per some research findings, danger of some asteroids named Apophis, Bennu, 1979 XB, and 2010 RF12 looms large over planet Earth. The first collision can take place in 10 years from now while the second and the most dangerous one can happen in 17 years from the current date. Scientists are toiling hard to find ways to avert these inevitable giants of space. Watch full episode for details.