We belong to the same family, Hominidae. We shared a common ancestor about 6 million years ago. Whatever that ancestor was, it was not chimp or human. One lineage resulted in modern chimps (and Bonobos), the other resulted in us (and many other species of the genus Homo, such as neanderthals). You say "And it was believed that humans are evolved from chimps based on some fossil studies".It has never been believed, nor will it ever, that humans evolved from chimps, or that crocodiles evolved from lizards. And technically, we are all fish...... kinda. Darwin was not the first scientist to contradict creationism.
Most of our modern understanding of phylogeny now comes from molecular data, using fossils as a calibration for the molecular clock. Be careful using science incorrectly in your article as it can diminish actual science in the public eye.
Have a read of "The invention of Religion" by Alexander Drake, it will compliment this article very nicely.
Have a look at "On the origin of species" too, by Charles Darwin. Your sentiment is good, your knowledge is lacking. Richard Dawkins "Ancestors Tale" is an amazing book for an easily accessible, yet complete guide to evolution.